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 a nephew of the professor of medicine, Ole Jacob Broch (1907–1995). He enrolled as a student in 1922. He participated in the Left Communist Youth League's of 1924. He was convicted for assisting in this crime and sentenced to 90 of probation. He graduated with the cand.jur. degree in 1928, and worked as an attorney in Oslo from 1929 to 1930. At that time he had been a writer for the periodical Mot Dag from 1923 to 1930. From 1930 to 1940 and 1945 to 1950 he worked as an attorney in Narvik.