On 6 May 1935 King George V, in commemoration of his Silver Jubilee, granted the dignity of Lord Mayor to the City of Plymouth and we've had a Lord Mayor from 1935 to the present day.
- 1439 to 1440: William Kethriche
- 1440 to 1441: Walter Clovelly
- 1441 to 1442: William Pollard
- 1442 to 1443: John Schepeley
- 1443 to 1445: William Nycott
- 1445 to 1446: John Schepeley
- 1446 to 1447: John Facye
- 1447 to 1448: John Carwynyk
- 1448 to 1449: John Facye
- 1449 to 1450: John Paige
- 1450 to 1452: Stephen Chepeman
- 1453 to 1455: Vincent Petelysden
- 1455 to 1456: John Dernford
- 1456 to 1457: Vincent Petelysden
- 1457 to 1458: John Carwynyk
- 1458 to 1459: Thomas Tregle
- 1459 to 1460: William Yogge
- 1460 to 1461: John Pollard
- 1461 to 1462: William Yogge
- 1462 to 1463: John Page
- 1463 to 1466: John Rowland
- 1466 to 1467: Richard Bovy
- 1467 to 1468: William Yogge
- 1468 to 1469: John Page
- 1469 to 1470: John Rowland
- 1470 to 1471: William Yogge
- 1471 to 1472: William Page
- 1472 to 1473: Richard Bovy
- 1473 to 1474: Nicholas Heynscott
- 1474 to 1475: William Page
- 1475 to 1477: Nicholas Heynscott
- 1477 to 1478: John Pollard
- 1478 to 1479: Nicholas Heynscott
- 1479 to 1480: William Rodgers
- 1480 to 1481: Thomas Tregarthen
- 1481 to 1482: Thomas Tresawell
- 1482 to 1483: Nicholas Heynscott
- 1483 to 1484: Thomas Greyson
- 1484 to 1485: Pers Carswell
- 1485 to 1486: Thomas Tresawell
- 1486 to 1487: Thomas Greyson
- 1487 to 1488: Nicholas Heynscott
- 1488 to 1489: Peryn Earle
- 1489 to 1490: Thomas Greyson
- 1490 to 1491: Nicholas Heynscott
- 1491 to 1492: John Paynter
- 1492 to 1494: William Thykpeny
- 1494 to 1495: Thomas Bygporte
- 1495 to 1496: Thomas Nycoll
- 1496 to 1497: William Rogers
- 1497 to 1498: Thomas Tresawell
- 1498 to 1499: John Paynter
- 1499 to 1500: John Ilcombe
- 1500 to 1501: William Byle
- 1501 to 1502: Thomas Cropp
- 1502 to 1503: John Horswell
- 1503 to 1504: John Paynter
- 1504 to 1505: John Brewne
- 1505 to 1506: William Tregle
- 1506 to 1507: Thomas Tresawell
- 1507 to 1508: Simon Carswell
- 1508 to 1509: John Paynter
- 1509 to 1510: Richard Gew
- 1510 to 1511: Walter Pollard
- 1511 to 1512: William Brokynge
- 1512 to 1513: John Gryslyng
- 1513 to 1514: John Pounde
- 1514 to 1515: William Brokynge
- 1515 to 1516: John Paynter
- 1516 to 1517: John Brewne
- 1517 to 1518: John Herforde
- 1518 to 1519: William Randall
- 1519 to 1520: John Pounde
- 1520 to 1521: William Randall
- 1521 to 1522: Stephen Pers
- 1522 to 1523: Thomas Bull
- 1523 to 1524: John Bovy
- 1524 to 1525: William Brokynge
- 1525 to 1526: John Pounde
- 1526 to 1527: John Herforde
- 1527 to 1528: John Bykham
- 1528 to 1529: James Horswell
- 1529 to 1530: William Brokynge
- 1530 to 1531: William Randall
- 1531 to 1532: John Bygporte
- 1532 to 1533: William Hawkins
- 1533 to 1534: Christopher Moore
- 1534 to 1535: John Elyott
- 1535 to 1536: James Horswell
- 1536 to 1537: Thomas Ball
- 1537 to 1538: Thomas Clowter
- 1538 to 1539: William Hawkyns
- 1539 to 1540: Thomas Byrte
- 1540 to 1541: John Thomas
- 1541 to 1542: Thomas Mylles
- 1542 to 1543: James Horswell
- 1543 to 1544: Thomas Holwaye
- 1544 to 1545: Thomas Clowter
- 1545 to 1546: William Randall
- 1546 to 1547: Lucas Coke (Cocke)
- 1547 to 1548: John Elyott
- 1548 to 1549: Richard Hooper
- 1549 to 1550: William Wiks (Weeks)
- 1550 to 1551: John Keynsam
- 1551 to 1552: Thomas Clowter
- 1552 to 1553: John Thomas
- 1553 to 1554: Lucas Cocke
- 1554 to 1555: John Ilcombe
- 1555 to 1556: John Ford
- 1556 to 1557: Thomas Clowter
- 1557 to 1558: John Derry
- 1558 to 1559: William Wiks (Weeks)
- 1559 to 1560: Lucas Cocke
- 1560 to 1561: John Elliott
- 1561 to 1562: William Lake (died 10 November - Edward Whyte chosen)
- 1562 to 1563: John Forde
- 1563 to 1564: John Derry
- 1564 to 1565: Nicholas Slannyng
- 1565 to 1566: Nicholas Bickford
- 1566 to 1567: John Ilcombe
- 1567 to 1568: William Hawkyns
- 1568 to 1569: Lucas Cocke
- 1569 to 1570: John Martyn
- 1570 to 1571: Gregory Cocke
- 1571 to 1572: William Holowaye
- 1572 to 1573: John Blythman
- 1573 to 1574: William Brookynge
- 1574 to 1575: John Amadas
- 1575 to 1576: Walter Peperell
- 1576 to 1577: John Ilcombe Snr
- 1577 to 1578: George Maynard
- 1578 to 1579: William Hawkyns
- 1579 to 1580: Gregory Cocke
- 1580 to 1581: John Blythman
- 1581 to 1582: Sir Francis Drake
- 1582 to 1583: Thomas Edmonds
- 1583 to 1584: John Sparke
- 1584 to 1585: Christopher Broking
- 1585 to 1586: Thomas Forde
- 1586 to 1587: George Maynarde
- 1587 to 1588: William Hawkyns
- 1588 to 1589: Humphry Fownes
- 1589 to 1590: John Blythman
- 1590 to 1591: Walter Peperell
- 1591 to 1592: John Sparke
- 1592 to 1593: John Gayre
- 1593 to 1594: John Phillips
- 1594 to 1595: George Barons
- 1595 to 1596: James Bagge
- 1596 to 1597: Humphry Fownes
- 1597 to 1598: Sir John Trelawney
- 1598 to 1599: Martin White, died
- 1599 to 1600: Richard Hitchens
- 1600 to 1601: Thomas Paine
- 1601 to 1602: William Parker
- 1602 to 1603: John Martyn
- 1603 to 1604: Sir Richard Hawkyne
- 1604 to 1605: Walter Mathew
- 1605 to 1606: James Bagge
- 1606 to 1607: William Downeman
- 1607 to 1608: Robert Trelawny
- 1608 to 1609: Thomas Sherwell
- 1609 to 1610: John Buttersby
- 1610 to 1611: Thomas Fownes
- 1611 to 1612: John Trelawny
- 1612 to 1613: John Waddon
- 1613 to 1614: John Scoble
- 1614 to 1615: John Clement
- 1615 to 1616: Abraham Colmer
- 1616 to 1617: Robert Trelawny
- 1617 to 1618: Thomas Sherwill
- 1618 to 1619: Nicholas Sherwill
- 1619 to 1620: Thomas Fownes
- 1620 to 1621: Robert Rawlyn
- 1621 to 1622: John Bownd
- 1622 to 1623: John Martyne
- 1623 to 1624: Leonard Pomery
- 1624 to 1625: Thomas Ceely
- 1625 to 1626: Nicholas Blake
- 1626 to 1627: Thomas Sherwill
- 1627 to 1628: Robert Trelawney
- 1628 to 1629: Nicholas Sherwill and Abraham Colmer
- 1629 to 1630: William Hele
- 1630 to 1631: John Bownd
- 1631 to 1632: John Waddon Jnr
- 1632 to 1633: Philip Andrews
- 1633 to 1634: Rob Trelawney Jnr
- 1634 to 1635: John Martyn Jnr
- 1635 to 1636: Thomas Crampporn
- 1636 to 1637: John Cawse
- 1637 to 1638: Nicholas Sherwill
- 1638 to 1639: William Hele
- 1639 to 1640: Robert Gubbes
- 1640 to 1641: William Byrche
- 1641 to 1642: Thomas Ceeley
- 1642 to 1643: Philip Francis
- 1643 to 1644: John Cawse
- 1644 to 1645: Justinian Peard
- 1645 to 1646: Barth Nicholl
- 1646 to 1647: Christopher Ceely
- 1647 to 1648: Richard Evenes
- 1648 to 1649: Timothy Allsop
- 1649 to 1650: Oliver Ceeley
- 1650 to 1651: Robert Gubbes
- 1651 to 1652: Philip Frances
- 1652 to 1653: John Madocke
- 1653 to 1654: Richard Spurwell
- 1654 to 1655: John Paige
- 1655 to 1656: Christopher Ceely
- 1656 to 1657: Justinian Peard
- 1657 to 1658: William Jefferie
- 1658 to 1659: Samuell Northcot
- 1659 to 1660: John Kinge
- 1660 to 1661: Oliver Ceeley
- 1661 to 1662: William Allen
- 1662 to 1663: William Jennens removed for non-conformity
- 1663 to 1664: John Harris
- 1664 to 1665: John Martyn
- 1665 to 1666: William Harpur
- 1666 to 1667: George Strelley
- 1667 to 1668: Thomas Strutt
- 1668 to 1669: William Symons
- 1669 to 1670: Daniel Barker
- 1670 to 1671: William Cotton
- 1671 to 1672: Peter Scaggell
- 1672 to 1673: John Lanyon
- 1673 to 1674: Henry Webb
- 1674 to 1675: William Weekes
- 1675 to 1676: John Dell
- 1676 to 1677: Andrew Horseman
- 1677 to 1678: William Tom
- 1678 to 1679: John Munyon
- 1679 to 1680: James Hull
- 1680 to 1681: William Symons
- 1681 to 1682: Daniel Barker
- 1682 to 1683: Peter Foote
- 1683 to 1684: William Martyn
- 1684 to 1685: Isaac Tillard died William Martyn
- 1685 to 1686: Samuel Madocke
- 1686 to 1687: John Trelawny
- 1687 to 1688: Thomas Stutt
- 1688 to 1689: William Symons
- 1689 to 1690: Philip Andrew
- 1690 to 1691: John Paige
- 1691 to 1692: John Martyn
- 1692 to 1693: John Munyon
- 1693 to 1694: Philip Wilcox
- 1694 to 1695: James Yonge
- 1695 to 1696: Robert Berry
- 1696 to 1697: John Munyon
- 1697 to 1698: John Warren
- 1698 to 1699: John Neal
- 1699 to 1700: Richard Opie
- 1700 to 1701: Joseph Webb
- 1701 to 1702: William Davies
- 1702 to 1703: William Cook
- 1703 to 1704: Nicholas Ginnys
- 1704 to 1705: Thomas Darracott
- 1705 to 1706: Jonah Lavington
- 1706 to 1707: Samuel Allen
- 1707 to 1708: James Cocke
- 1708 to 1709: Robert Hewer
- 1709 to 1710: James Bligh
- 1710 to 1711: William Roche, removed Richard Opie
- 1711 to 1712: Richard Cown, died Benjamin Berry
- 1712 to 1713: Andrew Phillips
- 1713 to 1714: William Hurrill
- 1714 to 1715: John Pike
- 1715 to 1716: John Crabb
- 1716 to 1717: Abraham Joy
- 1717 to 1718: John Beere, died Robert Hewer
- 1718 to 1719: Edward Deeble
- 1719 to 1720: William Bartlett
- 1720 to 1721: George Ridout
- 1721 to 1722: John Fletcher, died day after election John Elford
- 1722 to 1723: Sir John Rodgers
- 1723 to 1724: Andrew Philips
- 1724 to 1725: John Crabb
- 1725 to 1726: Samuel Brent
- 1726 to 1727: Benjamin Berry
- 1727 to 1728: Edward Deeble
- 1728 to 1729: John Rogers
- 1729 to 1730: Samuel Allen, died William Cock
- 1730 to 1731: John Tapson
- 1731 to 1732: John Wadden
- 1732 to 1733: Robert Hewer
- 1733 to 1734: John Helier
- 1734 to 1735: Thomas Phillips
- 1735 to 1736: William Strong, died Greenhill Darracott
- 1736 to 1737: John Veale
- 1737 to 1738: Robert Hewer
- 1738 to 1739: Henry Tolcher
- 1739 to 1740: Edward Deeble
- 1740 to 1741: John Waddon
- 1741 to 1742: Richard Gortley, died Sir J Rogers
- 1742 to 1743: Launcelot Robinson
- 1743 to 1744: John Rogers
- 1744 to 1745: Edward Hoblyn
- 1745 to 1746: William Martyn
- 1746 to 1747: Wm Davis Philips
- 1747 to 1748: Michael Nicholls
- 1748 to 1749: John Ellery
- 1749 to 1750: John Facey
- 1750 to 1751: James Richardson
- 1751 to 1752: Robert Triggs
- 1752 to 1753: John Drake, died Michael Nicholls
- 1753 to 1754: John Morshead
- 1754 to 1755: Jacob Austen
- 1755 to 1756: Thomas Bewes
- 1756 to 1757: John Forrest
- 1757 to 1758: Anthony Porter
- 1758 to 1759: John Facey
- 1759 to 1760: James Richardson
- 1760 to 1761: Robert Philips
- 1761 to 1762: Michael Nicholls
- 1762 to 1763: John Morshead
- 1763 to 1764: Jacob Austen
- 1764 to 1765: Thomas Bewes
- 1765 to 1766: John Nicholls
- 1766 to 1767: Wm Davis Philips
- 1767 to 1768: Richard Beach
- 1768 to 1769: Henry Tolcher
- 1769 to 1770: Samuel Peters
- 1770 to 1771: Joseph Tolcher
- 1771 to 1772: Diggory Tonkin
- 1772 to 1773: Joseph Brent
- 1773 to 1774: Robert Fanshawe
- 1774 to 1775: Sir L F Roger
- 1775 to 1776: Ralph Mitchell
- 1776 to 1777: Henry Tolcher, Jnr
- 1777 to 1778: Samuel White
- 1778 to 1779: Joseph Freeman
- 1779 to 1780: Thomas B Derricott
- 1780 to 1781: Jacob Shaw
- 1781 to 1782: Joseph Austen
- 1782 to 1783: George Marshall
- 1783 to 1784: John Arthur
- 1784 to 1785: John Nicholls
- 1785 to 1786: Joseph Tolcher
- 1786 to 1787: Diggory Tonkin
- 1787 to 1788: Robert Fanshawe
- 1788 to 1789: Peter Tonkin
- 1789 to 1790: John Cooban
- 1790 to 1791: Stephen Hammick
- 1791 to 1792: George Winne
- 1792 to 1793: William Crees
- 1793 to 1794: Andrew Hill
- 1794 to 1795: William Symons
- 1795 to 1796: Robert Fuge
- 1796 to 1797: Richard Burdwood
- 1797 to 1798: Peter Tonkin
- 1798 to 1799: Barth Dunsterville
- 1799 to 1800: John Arthur
- 1800 to 1801: Philip Langmead
- 1801 to 1802: Thomas Cleather
- 1802 to 1803: John Clark Langmead
- 1803 to 1804: Edmund Lockyer
- 1804 to 1805: James Elliott
- 1805 to 1806: John Hawker
- 1806 to 1807: Thomas Lockyer
- 1807 to 1808: Thomas Eales
- 1808 to 1809: William Langmead
- 1809 to 1810: Joseph Pridham
- 1810 to 1811: Edmund Lockyer
- 1811 to 1812: George Bellamy
- 1812 to 1813: John Arthur
- 1813 to 1814: Henry Woollcombe
- 1814 to 1815: Sir Diggory Forest
- 1815 to 1816: William Lockyer
- 1816 to 1817: S Pym, Capt R N
- 1817 to 1818: Thomas Miller
- 1818 to 1819: R Arthur, Capt R N
- 1819 to 1820: Geo Eastlake Jnr
- 1820 to 1821: Richard J Squire
- 1821 to 1822: Edmund Lockyer
- 1822 to 1823: W Adams Wellsford
- 1823 to 1824: N Lockyer, Capt R N
- 1824 to 1825: Edmund Lockyer
- 1825 to 1826: William H Hawker
- 1826 to 1827: R Arthur, Capt R N
- 1827 to 1828: R Pridham, Capt R N
- 1828 to 1829: Richard Freeman
- 1829 to 1830: William F Wise, Capt R N
- 1830 to 1831: N Lockyer, Capt R N
- 1831 to 1832: A Tozer, Capt R N
- 1832 to 1833: George Coryndon
- 1833 to 1834: William H Evens
- 1834 to 1835: John Moore
- 1835 to 1836: Thomas Gill
- 1836 to 1837: James King
- 1837 to 1838: William Hole Evans
- 1838 to 1839: George W Soltau
- 1839 to 1841: Joseph C Cookworthy
- 1841 to 1842: George W Soltau
- 1842 to 1843: William Prance
- 1843 to 1844: Nicholas Lockyer
- 1844 to 1845: Philip E Lyne
- 1845 to 1846: Benjamin Parham
- 1846 to 1847: Thomas H Bulteel
- 1847 to 1848: John Moore
- 1848 to 1849: William Burnell
- 1849 to 1850: James Moore
- 1850 to 1851: David Derry
- 1851 to 1852: Alfred Rooker
- 1852 to 1853: Herbert M Gibson
- 1853 to 1854: C Lopes Radcliffe
- 1854 to 1855: Thomas Stevens
- 1855 to 1856: John Kelly
- 1856 to 1857: Fras Freke Bulteel
- 1857 to 1858: Richard Hicks
- 1858 to 1859: James Skardon
- 1859 to 1860: James Burnell
- 1860 to 1861: William Luscombe
- 1861 to 1863: William Derry
- 1863 to 1865: Charles Norrington
- 1865 to 1866: Francis Hicks
- 1866 to 1868: William Radford
- 1868 to 1869: Alexander Hubbard
- 1869 to 1870: William Luscombe
- 1870 to 1871: Robert Coad Serpell
- 1871 to 1872: Isaac Latimer
- 1872 to 1873: John Kelly
- 1873 to 1874: Alfred Rooker
- 1874 to 1877: William F Moore
- 1877 to 1878: Joseph Wills
- 1878 to 1879: Edward James
- 1879 to 1880: William Derry
- 1880 to 1881: Francis A Morrish
- 1881 to 1882: Charles F Burnard
- 1882 to 1883: John Shelley
- 1883 to 1884: John Greenway
- 1884 to 1885: Edward James
- 1885 to 1887: William H Alger
- 1887 to 1890: Henry John Waring
- 1890 to 1891: John Thomas Bond
- 1891 to 1892: Francis W Harris
- 1892 to 1895: William Law
- 1895 to 1896: John Thomas Bond
- 1896 to 1897: Charles H Radford
- 1897 to 1898: John Thomas Bond
- 1898 to 1900: John Pethick
- 1900 to 1901: Richard Risdon, died Joseph A Bellamy
- 1901 to 1902: Joseph A Bellamy
- 1902 to 1904: Henry Hurrell
- 1904 to 1905: Richard W Winnicott
- 1905 to 1906: John Yeo
- 1906 to 1907: J F Winnicott
- 1907 to 1908: Sir C H Radford
- 1908 to 1909: Arthur E Spender
- 1909 to 1910: John Yeo
- 1910 to 1911: Thomas G G Wills
- 1911 to 1912: Henry Hurrell
- 1912 to 1913: James W S Godding
- 1913 to 1916: Thomas Baker
- 1916 to 1917: John P Goldsmith
- 1917 to 1919: Joseph Peace Brown
- 1919 to 1920: Lovell R Dunstan
- 1920 to 1921: William S Knight
- 1921 to 1922: J F Winnicott
- 1922 to 1924: S Stephens
- 1924 to 1925: R W Winicott
- 1925 to 1926: R J Mitchell
- 1926 to 1927: J J H Moses
- 1927 to 1928: W H J Priest
- 1928 to 1929: Ambrose Andrews
- 1929 to 1930: James Churchward
- 1930 to 1931: James Clifford Tozer
- 1931 to 1932: George Pearse Dymond
- 1932 to 1933: Richard Runnals Oke
- 1933 to 1934: E Stanley Leatherby
- 1934 to 1935 1935 July to November: James Elliot Pillar (First Lord Mayor) and Edward William Rogers
- 1935 to 1936: Hubert M Medland
- 1936 to 1937: Walter R Littleton
- 1937 to 1938: Solomon Stephens
- 1938 to 1939: George S Scoble
- 1939 to 1944: The Rt Hon Viscount Astor
- 1944 to 1945: Henry George Mason
- 1945 to 1946: The RT Hon Isaac Foot
- 1946 to 1947: W Harry Taylor
- 1947 to 1949: H J Perry
- 1949 to 1950: F G Leatherby
- 1950 to 1951: J Marshall
- 1951 to 1952: Randolph H Baker
- 1952 to 1953: Henry E Wright
- 1953 to 1954: Sir James Clifford Tozer
- 1954 to 1955: E W Perry
- 1955 to 1956: Edwin Broad
- 1956 to 1957: William James Oats
- 1957 to 1958: Leslie Francis Paul
- 1958 to 1959: George John Wingett
- 1959 to 1960: P N Washbourn
- 1960 to 1961: Frederick John Stott
- 1961 to 1962: Arthur Goldberg
- 1962 to 1963: Henry George Mason
- 1963 to 1964: Harold M Pattinson
- 1964 to 1965: Thomas H Watkins
- 1965 to 1966: Percival D Pascho
- 1966 to 1967: Thom. H L Stanbury
- 1967 to 1968: Frank Chapman
- 1968 to 1969: Ivor Clarence Lowe
- 1969 to 1970: George E H Creber
- 1970 to 1971: Eric Donald Nuttal
- 1971 to 1972: Dorothy F Innes
- 1972 to 1973: Jack Lester Luce
- 1973 to 1974: John Clifford Porter
- 1974 (part 1 April): George E H Creber
- 1974 to 1975: Frederick W Johnson
- 1975 to 1976: William I Thompson
- 1976 to 1977: Arthur R S Floyd
- 1977 to 1978: Robert R Thornton
- 1978 to 1979: William Evan Evans
- 1979 to 1980: Graham Joseph Jinks
- 1980 to 1981: Ronald George King
- 1981 to 1982: Ralph Vernon Morrell
- 1982 to 1983: Reginald C J Scott
- 1983 to 1984: Derek Mitchell
- 1984 to 1985: Peter Whitfeld
- 1985 to 1986: John Leslie Mills
- 1986 to 1987: William H C Glanville
- 1987 to 1988: Anthony H Parish
- 1988 to 1989: Gordon A Draper
- 1989 to 1990: Dennis H Dicker
- 1990 to 1991: John Finnigan
- 1991 to 1992: Catherine E Easton
- 1992 to 1993: Ronald Simmonds
- 1993 to 1994: John Bird Richards
- 1994 to 1995: Walter Thomas Ainsworth
- 1995 to 1996: Peter Nelson Wood
- 1996 to 1997: Sylvia Yvonne Bellamy
- 1997 to 1998: Joan Iris Stopporton
- 1998 to 1999: Eileen Ruby Evans
- 1999 to 2000: Thomas E J Savery
- 2000 to 2001: Dennis John Camp
- 2001 to 2002: David Frank Viney
- 2002 to 2003: Ian Peter Gordon
- 2003 to 2004: David John Stark
- 2004 to 2005: Bernard Claude Miller JP
- 2005 to 2006: Patrick John Nicholson
- 2006 to 2007: Michael Charles John Fletcher
- 2007 to 2008: David John James
- 2008 to 2009: Brian Vincent
- 2009 to 2010: Kenneth James Foster
- 2010 to 2011: Mary Elizabeth Aspinall
- 2011 to 2012: Peter Brookshaw
- 2012 to 2013: Michael Wright
- 2013 to 2014: Vivien Anne Pengelly
- 2014 to 2015: Michael Robert Fox
- 2015 to 2016: Dr John Mahony
- 2016 to 2017: Pauline Murphy
- 2017 to 2018: Wendy Foster
- 2018 to 2019: Sam Davey
- 2019 to 2020: Richard Stephen Ball
- 2020 to 2021: Christopher John Mavin
- 2021 to 2022: Therese Ann Beer
- 2022 to 2023: Susan Elizabeth Dann
- 2023 to 2024: Mark Charles Shayer