Sinclair (family name)
Sinclair is a family name for the following people. For people with the stage name / pseudonym Sinclair, see Sinclair .
- Adam Sinclair (born 1977), British actor
- Adelaide Sinclair (1900–1982), Canadian civil servant and commander
- Alan Sinclair (* 1985), British rower
- Alexander Sinclair (1911–2002), Canadian ice hockey player
- Alistair Sinclair (* 1960), British computer scientist
- Anne Sinclair (* 1948), French journalist
- Archibald Sinclair, 1st Viscount Thurso (1890–1970), British Liberal Party politician, Member of the House of Commons and peer
- Brian Sinclair (1915–1988), British veterinarian
- Cayle-Lorraine Sinclair (1947–2011), Canadian actress and film producer, see Cayle Chernin
- Christine Sinclair (* 1983), Canadian soccer player
- Claire Sinclair (* 1991), American model
- Clive Sinclair (born 1940), British inventor and entrepreneur
- Dave Sinclair ( David Sinclair ; born 1947), English musician, composer and singer
- David Sinclair (soccer player, 1969) (born 1969), Scottish soccer player
- David Sinclair (soccer player, 1990) (born 1990), Scottish soccer player
- David A. Sinclair (* 1969), Australian biologist and university professor
- Donald Sinclair (politician) (1829–1900), Canadian politician
- Donald Sinclair (1911–1995), English veterinarian and colleague of James Herriot, see James Herriot # Works
- Donald Sinclair (diplomat) , Canadian Ambassador to Israel from 2003 to 2006
- Eddie Sinclair (1937-2005), Scottish snooker player
- Edwyn Alexander-Sinclair (1865–1945), British admiral
- Emile Sinclair (* 1987), English football player
- Frank Sinclair (* 1971), Jamaican soccer player
- Fredrik Carl Sinclair (1723–1776), Swedish nobleman, military man and politician
- George Sinclair (1786–1834), English gardener and author
- Graeme Sinclair (born 1957), Scottish football player
- Harry Sinclair (* 1959), New Zealand director, writer and actor
- Henry Sinclair (nobleman) († around 1330), Scottish nobleman
- Henry Sinclair (Bishop) († 1565), Scottish clergyman, Bishop of Ross
- Henry Sinclair (Orkney) († 1400), Jarl of Orkney
- Henry II. Sinclair (around 1375-1420), Jarl of Orkney
- HA Sinclair de Rochemont (1901–1942), Dutch fascist and collaborator
- Iain Sinclair (* 1943), British filmmaker and writer
- Ian Sinclair (born 1929), Australian politician
- Isaac von Sinclair (1775–1815), German diplomat and writer
- Jack Sinclair (football player) (1856-1922), Northern Irish football player
- Jack Sinclair (track and field athlete) , New Zealand track and field athlete
- Jack Sinclair (Poker Player) ( Jack David Sinclair ; * 1990), British poker player
- Jackie Sinclair (1943-2010), Scottish football player
- James Sinclair (fur trader) (1811-1856), Canadian fur trader and explorer
- James Sinclair (botanist) (1913–1968), Scot, British from Orkney , later in Singapore
- James Sinclair (politician) (1908-1984), Canadian politician
- James Sinclair (soccer player) (born 1987), English soccer player
- James H. Sinclair (1871–1943), American politician
- Jasmine Sinclair (* 1982), British model
- Jaz Sinclair (* 1994), American actress
- Jim Sinclair (* 1940), American autist and activist
- John Sinclair (economist) (1754–1835), Scottish economist and politician
- John Sinclair (environmentalist) (1939-2019), Australian environmental activist
- John Sinclair (anarchist) (born 1941), American writer and anarchist
- John Sinclair (musician) (born 1952), British rock musician
- John Archibald Sinclair, 3rd Viscount Thurso (* 1953), British politician, see John Thurso
- John McHardy Sinclair (1933–2007), British linguist
- Joshua Sinclair (* 1953), American screenwriter
- Kenya Sinclair (* 1980), Jamaican athlete
- Keith Sinclair (historian) (1922–1993), New Zealand historian and poet
- Keith Sinclair (Bishop) (born 1952), British clergyman, Bishop of Birkenhead
- Kim Sinclair (* 1954), New Zealand production designer and art director
- Laurence Sinclair (1908–2002), British Air Force officer
- Lorraine Sinclair (1947-2011), Canadian actress and film producer, see Cayle Chernin
- Lister Sinclair (1921-2006), Canadian news anchor
- Madge Sinclair (1938–1995), Jamaican-American actress
- Malcolm Sinclair (born 1950), English actor
- Malcolm Sinclair, 20th Earl of Caithness (born 1948), British politician
- Mary Emily Sinclair (1878–1955), American mathematician and university professor
- Mike Sinclair (1938-2017), English football player
- Peggy Sinclair ( Ruth Margaret Sinclair ; 1911-1933), inspired Samuel Beckett to write his first novel
- Rebecca Sinclair (* 1991), New Zealand snowboarder
- Reg Sinclair (1925-2013), Canadian ice hockey player and entrepreneur
- Richard Sinclair (* 1948), English musician
- Ronald Sinclair (1924–1992), New Zealand actor
- Scott Sinclair (* 1989), English football player
- Sharon Sinclair (* 1991), German squash player
- Thomas Alan Sinclair (1899–1961), British classical philologist
- Timothy J. Sinclair (* 1963), British economist and political scientist
- Trevor Sinclair (* 1973), English football player
- Upton Sinclair (1878–1968), American writer
- William Sinclair (Bishop) († 1337), Scottish clergyman
- William Sinclair (nobleman, † before 1303) († between 1299 and 1303), Scottish nobleman
- William Sinclair (nobleman, † after 1358) († after 1358), Scottish nobleman
- William Sinclair, 1st Earl of Caithness (after 1407–1480), Scottish nobleman
- William Sinclair, 2nd Earl of Caithness († 1513), Scottish nobleman
- William Sinclair, 10th Earl of Caithness (1727–1779), Scottish nobleman
- William Sinclair, 2nd Lord Sinclair († 1487), Scottish nobleman
- William Sinclair (knight) († 1330), Scottish nobleman
- William J. Sinclair (1877-1935), American paleontologist
- William Sinclair see Willy Moon (* 1989), New Zealand musician