David or Dave Dennis may refer to: Dave Dennis (DJ) (1937–2007), British pirate radio DJ Dave Dennis (rugby union) (born 1986), Australian rugby union player Dave Dennis (activist) (born 1940), American civil rights activist David Dennis (actor) (born 1960), South African actor David W. Dennis (1912–1999), American politician David Dennis (rower) (born 1980), Australian Olympic rower