Dennis McCarthy (born 1945) is an American film score composer.

His credits for TV series include the main title theme and other music for Star Trek: Deep Space Nine, as well as music for Star Trek: The Next Generation, Star Trek: Voyager, Star Trek: Enterprise, The Twilight Zone (the 1985 revival), MacGyver, Sliders, Dawson's Creek, Birdland (1994), Having Our Say: The Delany Sisters' First 100 Years and V: The Final Battle.