Robert Altman (1925-2006), film director

Sidney Altman (born 1939), biologist

Gila Altmann (born 1949), German politician and member of the Green Party

Alexander Altmann (1906–1987), professor of Judaic studies

Scott Altman (born 1959), astronaut

Maria Altmann, the plaintiff in the court decision

Doug Altman, statistician

Jeanne Altmann, professor and member of the National Academy of Sciences

Republic of Austria v. Altmann, a notable decision by the United States Supreme Court

John Altman (born 1952), British actor

Nathan Altman (1889-1970), painter

Altmann of Passau (bishop) (1020-1091)

Ida Altman (born 1950), American historian

Richard Altmann (1852-1900), pathologist

Jeff Altman (born 1951), comedian

Moyshe Altman (1890-1981), Yiddish writer

Tosia Altman (1918-1943), resistance fighter

Howard Altman (born 1960), journalist

Altmann (1905 automobile), an early German automobile

Elisabeth Altmann-Gottheiner (1874-1930), lecturer

Edward Altman, (born 1941), Professor of Finance

Mike Altman (born 1955), songwriter

Altman (automobile), Ohio-based manufacturer

Georges Altman (born 1901), journalist

Altman, Colorado, a ghost town

Wilhelm Altmann (1862-1951), historian

Benjamin Altman (1840 – 1913), founder of B. Altman & Co and art collector

Roger Altman, founder of Evercore Partners and former U.S. Deputy treasury secretary