Diehl is a German surname. Notable people with the surname include:
Arts Arthur Diehl (1870–1929), English impressionist landscape artist Carol Diehl, American artist, art critic and poet Guy Diehl (born 1949), American painter Gaston Diehl (1912–1999), French professor of art history and art critic Hanns Diehl (1877–1946), German-Austrian painter Volker Diehl (born 1957), German art gallery owner
Acting August Diehl (born 1976), German actor John Diehl (actor) (born 1950), American character actor Karl Ludwig Diehl (1896–1958), German film actor
Entertainment Aaron Diehl (born 1985), American jazz pianist Alden Diehl (1931–2000), Canadian radio executive and comedian Alex Diehl (born 1987), German singer and songwriter Alice M. Diehl (1844-1912), English musician and writer Caroline Diehl, British media executive
Politics Conrad Diehl (1843–1918), American politician, mayor of Buffalo Geoff Diehl (born 1969), American politician in Massachusetts Guida Diehl (1868–1961), German Nazi party official John Diehl (politician) (born 1965), American politician in Missouri William J. Diehl (1845–1929), American industrialist and politician, mayor of Pittsburgh
Science René Diehl (1912–1980), French archaeologist Renee Diehl, American physicist Richard Diehl (born 1940), American archaeologist, anthropologist and academic William Webster Diehl (1891–1978), American mycologist
Sports Carl Diehl (1904–1997), American college football player Daniel Diehl (born 2005), American swimmer Dave Diehl (1918–1994), American football player David Diehl (born 1980), American football player Ella Diehl (born 1978), Russian badminton player Ernie Diehl (1877–1958), American baseball player Ernst Diehl (born 1949), German footballer George Diehl (1918–1986), American baseball player John Diehl (American football) (1936–2012), American football player Phillip Diehl (born 1994), American baseball player Terry Diehl (born 1949), American golfer Wally Diehl (1905–1954), American football player
Other Charles Diehl (1859–1944), French historian Edith Diehl (1876–1953), American bookbinder Harold S. Diehl (1891–1973), American physician and anti-smoking activist Jackson Diehl (born 1956), American journalist James Diehl (1937–2025), American minister and general superintendent in the Church of the Nazarene Huston Diehl (1948–2010), American professor in Iowa Karl Diehl (economist) (1864–1943), German economist Mekayla Diehl (born 1988), American beauty pageant titleholder Philip Diehl (inventor) (1847–1913), German-American mechanical engineer and inventor Philip N. Diehl (born 1951), American businessman, director of the United States Mint Pony Diehl (c. 1848–1888), American outlaw in the New Mexico Territory and Arizona Territory Sarah Diehl (born 1978), German author Walter Stuart Diehl (1893–1976), U.S. Navy officer and aerodynamics and aircraft designer William Diehl (1924–2006), American novelist and photojournalist
See also Diehl (disambiguation) Dahl (surname)