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