- A Cyclops a one-eyed monster in Greek mythology.
- Cyclops is a comic book superhero in the Marvel Comics universe, and a member of the X-Men. See Cyclops (comics).
- Two ships of the United States Navy have borne the name USS Cyclops.
- Cyclops is a type of agate found in Mexico. See cyclops (rock).
- Cyclops is a comic poem by ancient Greek poet Philoxenus. See Cyclops (poem).
- The Project Cyclops was a proposal for construction of an Earth-based radio telescope array with 1,500 dishes.
- Cyclops is a publicity campaign aimed at making powerlifting a sport in the 2004 Olympics. See Cyclops (publicity campaign).
- Cyclops is a Genus of small aquatic crustacea characterised by a sinle median eye in a rather cone shaped body - one of many Genera termed Water Fleas.
- Cyclops is a fictional organisation in David Brin's novel The Postman.
- Cyclops is a fictional monster in the Power Rangers Television series. See List of Mighty Morphin Power Rangers monsters#Cyclops
