Dalley is a surname. Notable people with the surname include:
Amy Dalley (born 1981), American country singer-songwriterChris Dalley, American drummerDenver Dalley, American singer-songwriterDerrick Dalley (born 1965), Canadian politicianGifford Dalley, American politicianHelen Dalley (born 1957), Australian journalistJohn Dalley (born 1935), American classical violinistJohn Bede Dalley (1876–1935), Australian journalist and writerRichard Dalley, American ice dancerWilliam Bede Dalley (1831–1888), Australian politician and barrister