Arch is a masculine given name and a surname which may refer to:
Arch Knott (1916–1998), Australian rules footballer
Arch McDonald (1901-1960), American radio broadcaster, longtime voice of Major League Baseball's Washington Senators
Arch A. Moore, Jr. (1923–2015), American lawyer, politician and convicted felon
Arch Oboler (1909–1987), American playwright, screenwriter, novelist, producer and director
Arch Ward (1896–1955), sports editor for the Chicago Tribune newspaper
E. L. Arch, a pen name of American novelist Rachel Cosgrove Payes (1922-1998)
Hannes Arch (1967–2016), Austrian air racer and 2008 world champion
John Arch (born 1959), American progressive metal singer born John Maurice Archambault
Joseph Arch (1826–1919), English politician
