David Gallagher (born 1985) is an American film and television actor.
David Gallagher may also refer to:
David Gallagher (Australian footballer) (born 1980), former Australian rules footballer David Gallagher (Gaelic footballer) (born 1980), Meath Gaelic footballer Dave Gallagher (born 1960), baseball player Dave Gallagher (American football) (1952–2025), American football defensive tackle Dave Gallagher, creator of the animated web series MechWest
See also Dave Gallaher (1873–1917), New Zealand rugby union footballer David Gallaher (born 1975), Video game developer and American comics writer