Boysen

Boysen may refer to:

People

 * Boysen (surname), list of people with the surname

Other uses

 * Boysen Dam, rockfill dam in Wyoming, U.S.
 * Boysen Reservoir, reservoir formed by Boysen Dam
 * Boysen State Park, public recreation area surrounding the Boysen Reservoir
 * Bert och Boysen, Swedish diary novel written by Anders Jacobsson and Sören Olsson