Marsh is a surname. Notable people with the surname include:
Adam Marsh (c. 1200-1259), English Franciscan, scholar and theologian
Adrian Marsh (born 1978), English cricketer
Albert L. Marsh (1877-1944), American metallurgist
Albert Marsh (Medal of Honor recipient) (d. 1895), U.S. Medal of Honor recipient
Anna Marsh (??-1834), who established the Vermont Asylum of the Insane
Brad Marsh (born 1958), former Canadian professional ice hockey player
Carol Marsh (born 1929), British film actress
Charles Marsh (disambiguation), any of several people by that name
Clifton E. Marsh (born 1946), American author, sociologist and educator
Dan Marsh, Canadian professional wrestling referee and a professional wrestler
Dave Marsh (born 1950), American music critic
David Marsh (disambiguation), any of several people by that name
D. E. Marsh (1862-1933), Locomotive Superintendent of the London, Brighton and South Coast Railway from 1905 to 1911
Edward Marsh (disambiguation), any of several people by that name
Frank Lewis Marsh (1899-1992), American biologist
Fred Marsh (1924-2006), American baseball player
Gary Marsh, Disney Channel executive
Geoff Marsh (born 1958), former Australian cricketer and coach
George Marsh (disambiguation), any of several people by that name
George Perkins Marsh (1801-1882), American philologist and diplomat
Graham Marsh (born 1944), former Australian professional golfer
Gregg Marsh successful American Chef (born 1974)
Henry Marsh (athlete) (born 1954), former American steeplechase athlete
Herbert Marsh (1757-1839), Church of England Bishop
Howard Marsh (died 1969), leading Broadway tenor
Hugh Marsh (born 1955), Canadian violinist
James Marsh (disambiguation), any of several people by that name
Jean Marsh (born 1934), English actress
Jem Marsh (born 1930), British engineer and racing car driver
Jesse Marsh (1907-1966), American comic book and animation artist
Joan Marsh (1913-2000), American actress
Jodie Marsh (born 1978), British glamour model and reality TV star
John Marsh (disambiguation), any of several people by that name
Jonathan Marsh (1621–1672), founding settler of the New Haven Colony, and of Norwalk, Connecticut
Keith Marsh (born 1926), English actor
Kyal Marsh (born 1987), Australian actor
Kym Marsh (born 1976), English actress and singer
Lou Marsh (1879-1936), Canadian athlete and sports journalist
Mae Marsh (1894-1968), American actress
Matthew Marsh (disambiguation), any of several people by that name
Melissa Marsh (born 1985), Australian basketball player
Michael Marsh (athlete) (born 1967), former American sprinter
Michael Marsh (journalist), American television news anchor
Michele Marsh (disambiguation), any of several people by that name
Michelle Marsh (model) (born 1982), British glamour model
Mike Marsh (disambiguation), any of several people by that name
Mitchell Marsh (born 1991), Australian cricketer
Narcissus Marsh (1638-1713), English clergyman
Ngaio Marsh (1895-1982), New Zealand mystery novelist and theatre director
Othniel Charles Marsh (1831-1899), American paleontologist
Ozan Marsh (1920-1992), American concert pianist
PJ Marsh (born 1980), Australian rugby league player
Phil Marsh (born 1986), English footballer
Randy Marsh (born 1949), Major League baseball umpire
Ray Brent Marsh, mortician responsible for the Tri-State Crematory scandal
Reginald Marsh (disambiguation), any of several people by that name
Richard Marsh (disambiguation), any of several people by that name
Rod Marsh (born 1947), retired Australian cricketer
Rodney Marsh (footballer) (born 1944), retired English footballer
Sally Ann Marsh, British singer and actress
Samuel Marsh (1796-1874), Vermont clergyman (see Wilson, James Grant; Fiske, John, eds. (1900). "Marsh, Samuel". Appletons' Cyclopædia of American Biography. New York: D. Appleton. )
Samuel Marsh, former English professional footballer
Shaun Marsh (born 1983), Australian cricketer
Stanley Marsh 3 (1938–2014), American artist and philanthropist
Terry Marsh (disambiguation), any of several people by that name
Thomas B. Marsh (1799-1866), leader in the Latter Day Saint movement
Tom Marsh, American former Major League Baseball player
Tom Marsh (Oregon politician), former member of the Oregon House of Representatives
Tony Marsh (disambiguation), any of several people by that name
Warne Marsh (1927-1987), American tenor saxophonist
William Henry Marsh, governor of Hong Kong 1882-83 and 1885–87
