Fen may refer to the following items:
- Askkto-Fen IV, location of the slave pits of Askkto-Fen IV
- Corvax Fen, a forested area on the planet Mustafar
- Fen slug, a type of slug known to the Chiss Ascendancy
- Fen, an Imperial Customs agent who worked at the starport in Quantill City, on Ando, during the Galactic Civil War
- Fen (High Commander), a starfighter pilot who served in the Rebel Alliance during the Galactic Civil War
- Fen Ackdo, a male Bothan chassis broker who conducted business on Nova Orion Station during the time of the Galactic Civil War
- Fen Corandel, a pilot who served in the Rebel Alliance during the Galactic Civil War
- Fen McTyela, a mercenary chief who piloted a BTL-A4 Y-wing starfighter in the Tatoo system during the time of the Galactic Civil War
- Fenig Nabon, called "Fen" by friends, a Human female smuggler and part-time con-artist
- Fen Teak, a Muun painter
- Fen Zeil, a Duros gunslinger
- Calk Fen, a male accountant in the employ of Jabba the Hutt
- Molik, also called Molic Fen, a male Human who served as a specialist in the Imperial Army of the reconstituted Sith Empire
- Potul Fen, a male Human who served as a officer in the Imperial Army of the reconstituted Sith Empire
- Urai Fen, a Force-sensitive male Talortai who served as Tyber Zann's loyal bodyguard, lieutenant, friend, and second in command of the Zann Consortium
- Uden Fen, an asteroid belt located between the planets Zoge Ver and Renenen in the Guter Wade system
- Fen of the First, a small lake on the eastern edge of the Malignant Bog on the planet Dromund Kaas
- Gorros' Fen, a massive, tubelike worm that extended from the bowels of the Yuuzhan Vong worldship it was grown into