David Hahn (disambiguation)

David Hahn, or "Radioactive Boy Scout", (1976-2016) attempted to build a homemade breeder nuclear reactor in 1994, at age 17.

David Hahn may also refer to:
 * David Hahn (Canadian politician) (1925–2012), Canadian member of Parliament
 * David Hahn (American politician) (born 1955), 2006 Democratic candidate for Governor of Nebraska
 * David Hahn (cartoonist) (born 1967), American comic book artist
 * David Hahn, CEO of BC Ferries
 * Dave Hahn, mountain guide, journalist and lecturer