List of movies of the year: 1973

The fifth and final episode in the Planet of the Apes series. After the collapse of human civilization, a community of intelligent apes led by Caesar lives in harmony with a group of humans. Gorilla General Aldo tries to cause an ape civil war and a community of human mutants who live beneath a destroyed city try to conquer those whom they perceive as enemies. All leading to the finale.

A man befriends a fellow criminal as the two of them begin serving their sentence on a dreadful prison island, which inspires the man to plot his escape.

A gunfighting stranger comes to the small settlement of Lago. After gunning down three gunmen who tried to kill him, the townsfolk decide to hire the Stranger to hold off three outlaws who are on their way.

This episodic film is a close relative of Wolf Hartwig's schoolgirl report movies, made by the same people, in a similar style, around similar topics. However, this one specifically focuses on the coming-of-age aspects, to an extent that it also touches on delicate issues such as paedophilia.

A widower and two of his sons become infatuated by their beautiful housekeeper, and all three set out to seduce her using their own unique methods.

Twelve year old Regan MacNeil begins to adapt an explicit new personality as strange events befall the local area of Georgetown. Her mother becomes torn between science and superstition in a desperate bid to save her daughter, and ultimately turns to her last hope: Father Damien Karras, a troubled priest struggling with his own faith.