- Syrtis Major Planitia is a "dark spot" (an albedo feature) located in the boundary between the northern lowlands and southern highlands of Mars.
- Syrtis Minor is the Latin name used in Ancient Rome for the gulf of the Mediterranean Sea along the coast of North Africa, roughly from modern day Tripoli to Sfax, Tunisia.
- Gulf of Sidra is a body of water in the Mediterranean Sea on the northern coast of Libya.
- The Gulf of Gabès (Arabic: خليج قابس), called Minor Syrtis in ancient times, is a gulf on Tunisia's east coast in the Mediterranean Sea.
- Syrtis is one of the three fighting realms in the Regnum Online MMORPG.