Peter Theodor Broch (27 January 1904 – 26 April 1998) was a Norwegian lawyer and politician for the Labour Party.
He was born in Kristiania as a son of Colonel Ole Jacob Broch (1875–1963) and housewife Henny Salvesen (1877–1957).
He was elected to the Norwegian Parliament from the Market towns of Nordland, Troms and Finnmark in 1945, but was not re-elected in 1949.
He was then appointed chief administrative officer (rådmann) in Tønsberg Municipality, staying in that position until 1973.
He was a member of Gamle Oslo borough council from 1976 to 1980, and in 1978, he founded the Norwegian-Pakistani Association, being its first chairman from 1978 to 1981.