•
Adeline May Cowan, Scottish botanist •
Aileen H. Cowan (1926–2024), Canadian painter and sculptor •
Andrew Cowan (disambiguation), several people •
Austin M. Cowan (1885–1949), Justice of the Kansas Supreme Court •
Barry Cowan (broadcaster), journalist and broadcaster •
Barry Cowan (tennis), former tennis player •
Bernard Cowan (1922–1990), Canadian actor, producer, and writer •
Cathy A. Cowan, American economist and social scientist •
Charles Cowan (1801–1889), Scottish politician and papermaker •
Charles Cowan (cricketer) (1883–1958), Welsh-born English cricketer and naval officer •
Charley Cowan (1938–1998), American football player •
Cindy Cowan, Movie producer •
Claire Cowan, New Zealand composer •
Clyde Cowan, co-discoverer of the neutrino •
Darcy Rivers Warren Cowan, Australian medical practitioner •
David Tennant Cowan, British World War II general known as "Punch" Cowan •
Denys Cowan, American comic book artist and television producer •
Easton Cowan (born 2005), Canadian ice hockey player •
Ed Cowan (born 1982), Australian cricketer •
Edith Cowan, first female member of an Australian parliament •
Edgar Cowan (1815–1885), former U.S. Senator from Pennsylvania •
Elliot Cowan, actor •
Ernest Cowan, Western Australian politician •
Ethel Mary Vaughan Cowan (1868–1943), Australian medical doctor •
Glenn Cowan, American table tennis player, involved in Ping Pong Diplomacy •
Harry Cowan (1893–1974), Scottish footballer •
Hector Cowan (1863–1941), American, member of College Football Hall of Fame •
Hendy Cowan (born 1943), Western Australian politician •
Henry Cowan, British politician •
Henry Kenneth Cowan, a British medical practitioner •
Hugh Cowan, a former Canadian church minister, historian, author and editor •
James Alexander Cowan, son of Hugh Cowan, was a Canadian writer and a well known public relations consultant •
James Cowan (author), Australian author •
James Cowan (British Army officer) Major General, British Army •
James Cowan (South Australian politician) •
James Cowan (New Zealand writer) •
Jean Hunter Cowan, Scottish artist •
Jeff Cowan, ice hockey player •
Jeremy Cowan (1923–2013), British historian •
Jerome Cowan, actor •
Joe Cowan, American football player •
John Cowan, American soul music and progressive bluegrass vocalist and bass guitar player •
John Cowan (RAN officer), Australian navy officer •
John Cowan (sheriff), Lord Mayor of London •
John Cowan (South Australian politician) •
John Lancelot Cowan, South Australian politician •
John Macqueen Cowan (1892–1960), Scottish botanist •
John W. Cowan, American programmer involved with Unicode and Lojban •
Joyce Cowan, New Zealand midwifery educator •
Lee Cowan, American news correspondent. •
Lawrence Cowan (1858–1933), American politician, lawyer, and businessman •
Michael Cowan (cricketer) (1933–2022), English cricketer •
Michael L. Cowan (1944–2023), Surgeon General of the United States Navy •
Nelson Cowan, American researcher in psychology, specialized in working memory •
Patrick Cowan, American football player •
Philip R. Cowan (fl. 1960s), recipient of the Bronze Wolf Award •
Rachel Cowan (1941–2018), American rabbi •
Ralph Wolfe Cowan (1931–2018), American artist •
Ralph Cowan (politician) (1902–1990), Canadian politician •
Ralph Cowan (cricketer) (born 1960), English cricketer •
Ralph Cowan (footballer), Scottish footballer •
Reed Cowan, American journalist •
Richard Cowan (bass-baritone) (1957–2015), American operatic bass-baritone •
Richard Cowan (cannabis activist), a leader of NORML and proponent of the decriminalization of marijuana •
Richard Cowan (soldier), posthumous recipient of the Medal of Honor •
Riki Cowan (born 1963), New Zealand rugby union player •
Rob Cowan (born 1948), English music broadcaster and writer •
Robert Cowan (governor), Governor of Bombay from 1729 to 1734 •
Samuel Cowan (born 1941), British general •
Samuel Cowan (historian) (1835–1914), Scottish historian •
Sidney Cowan (1897–1916), Irish military aviator •
Thomas Cowan (South Australian politician) •
Thomas F. Cowan, New Jersey State Senator and Assemblyman •
Tim Cowan, American football player •
Tom Cowan (born 1969), Scottish footballer •
Tom Cowan (filmmaker) (born 1942), Australian filmmaker •
Tommy Cowan (born 1946), Reggae producer and singer •
Walter Cowan (1871–1956), Royal Navy admiral who saw service in both WWI and WWII •
William "Mo" Cowan (born 1969), U.S. Senator from Massachusetts ==See also==