The Temple of Apollo Patroos is a small ruined temple on the west side of the Ancient Agora of Athens. The original temple was an apsidal structure, built in the mid-sixth century BC and destroyed in 480/79 BC. The area probably remained sacred to Apollo. A new hexastyle ionic temple was built ca. 306-300 BC, which has an unusual L-shaped floor plan. Some fragments from the sculptural decoration of this structure survive. The colossal cult statue, by Euphranor, has also been recovered.

The ancient Agora of Athens is the best-known example of an ancient Greek agora, located to the northwest of the Acropolis and bounded on the south by the hill of the Areopagus and on the west by the hill known as the Agoraios Kolonos, also called Market Hill. The Agora's initial use was for a commercial, assembly, or residential gathering place.