Tennant is a Scottish surname, and may refer to:
Alan Tennant (1930–1997), English rugby league footballer of the 1940s and 1950s
Alexander Tennant (1772–1814), British colonist of South Africa
Amy Tennant (born 1994), English field hockey player
Andrew Tennant (disambiguation) Andrew or Andy, multiple people
Billy Tennant (footballer) (1865–1927), English footballer
Charles Tennant (1768–1838), Scottish chemist and industrialist
Christopher Tennant (born 1978), Danish-American Ganjapreneur
David Tennant (disambiguation), multiple people
Don Tennant (1922–2001), American advertising executive
Dorothy Tennant (1855–1926), British artist
Edward Tennant, 1st Baron Glenconner (1859–1920), British politician
Edward Tennant (1897–1916), British poet
Emily Tennant (born 1990), American actress
Emma Tennant (1937–2017), British novelist
Forest Tennant, American physician and advocate for opioid pain medications
Georgia Tennant (born 1984), English actress
Harold Tennant (1865–1935), British politician
Henry Tennant (disambiguation), multiple people
Iain Tennant (1919–2006), British businessman
James Tennant (disambiguation), multiple people
Jan Tennant (born 1937), Canadian television journalist
John Tennant (disambiguation), multiple people
Kylie Tennant (1912–1988), Australian novelist, playwright, and historian
Natalie Tennant (born 1967), U.S. politician
Neil Tennant (born 1954), British musician with the Pet Shop Boys
Neil Tennant (philosopher) (born 1950)
Peter Tennant (cricketer), English cricketer
Scott Tennant (born 1962), American classical guitarist and composer
Smithson Tennant (1761–1815), British chemist
Stella Tennant (1970–2020), Scottish model
Stephen Tennant (1906–1987), British aristocratic eccentric
Ty Tennant (born 2002), English actor
Veronica Tennant (born 1946), Canadian ballerina
Victoria Tennant (born 1950), British actress
Walter Tennant (1921–2000), English rugby league footballer
William Tennant (United Irishmen) (1759–1832), Ulster Presbyterian banker
William Tennant (poet) (1784–1848), Scottish poet
William Tennant (Royal Navy officer) (1890–1963), Royal Navy officer