Galen, an ancient Greek physician

Clemens August Graf von Galen, a German count and Cardinal of the Roman Catholic Church

Vasily Blyukher, a Soviet military commander

OpenGALEN, provider of an open source medical terminology

Galen Strawson, a British philosopher

Bernhard von Galen, who was prince-bishop of Münster

The Galen Center, the USC Trojans basketball and USC Volleyball facility for the University of Southern California Trojans.

Galen Tyrol is the senior NCO onboard the Battlestar Galactica in the re-imagined Battlestar Galactica series.

Galen is a character on the television show Babylon 5. He is a technomage, or a person who uses scientific methods to produce magical-looking results.

Dr. Galen, Dr. Zaius' assistant in Planet of the Apes, played in the 1968 movie by Wright King and in the 1974 TV series by Roddy McDowall.