Peter Jørgen Frydendahl (1766-1830), was a Danish stage actor.

He belonged to the elite actors of the Royal Danish Theatre from 1786.

Frydendahl grew up as the son of textile merchant Hans Peter Frydendahl (c. 1705-91) and Kirstine Mortensdatter (c. 1745-94) but his real father was Hans Wilhelm von Warnstedt who had served as managing director of the Royal Danish Theatre since 1876.

He was apprenticed as an office clerk before his father got him into the Royal Theatre's singing school where he studied under Michel Angelo Potenza.

[1] He had his debut on 7 December 1786 as Belcour in The West Indian followed by a role as Charles in The School for Scandal.