Trygve Patroclus Einarsønn von Hirsch (6 November 1912 – 9 March 1992) was a Norwegian barrister and writer.
He was born in Lørenskog as a son of landowner and dentist Einar von Hirsch (1872–1938) and Elise Jacobine Kjoss-Hansen.
He was then deputy judge in Nordre Sunnmøre District Court in 1938 and for the stipendiary magistrate in Ålesund in 1939.
He also chaired Høka from 1967 and was a board member of IBM Norway (from 1953), Autoindustri (from 1961), Grønvold Industri (from 1964), Eckbos Legater (from 1967), Titan Co and Titania (from 1966), Forsikringsselskapet Pallas (from 1971) and the Norwegian Jockey Club.
Novels include Cocktailmysteriet (1941), Dødstonene (1942), Åndemasken (1942) and Døden går på bedehus (1945), with Anton Beinset.