John Olsen (12 August 1888 – 9 December 1959) was a Danish film producer, screenwriter and theater owner.
[citation needed] He attended Vestre Borgerdydsskole where he earned a primary diploma, and then moved to Germany for a merchant apprenticeship.
To a large extent, he was also a writer or co-creator, working with Victor Borge, Arvid Muller, Paul Sarauw, Annelise Reenberg and others.
Olsen wrote more than twenty screenplays between 1936 and 1960, including Recrut 67, Petersen, Det var pa Rundetarn, Ferry Inn, Mate Karlsen and Baronessen fra Benzintanken, his last film.
John Flemming Olsen, his son from his marriage to Inger Marie Karmann on 8 April 1916, continued the leadership of the Saga Studios until it closed in 1974.