Dahlgren

Several people and places are named Dahlgren.

Rear Admiral John A. Dahlgren (1809–1870) was a U.S. Navy officer noted for the weapons he designed.

Several places in the United States are named for him, including:

• Dahlgren, Illinois
• Dahlgren, Virginia, and the U.S. Naval base there, which was originally used for testing guns but is now more involved in the Space Program
• Dahlgren Hall at the U.S. Naval Academy in Annapolis, Maryland

The Dahlgren Affair was an assassination plot against Jefferson Davis during the American Civil War led by Admiral Dahlgren's son Ulric Dahlgren

See also the science fiction novel Dhalgren by Samuel R. Delany