Dan Costello

Dan or Daniel Costello may refer to:

• Dan Costello (baseball) (1891–1936), American baseball player
• Dan Costello Snr, pioneer of tourism in Fiji
• Dan E. Costello (1909–?), member of the Illinois House of Representatives
• Daniel Rae Costello (1961–2019), Rotuman Fijian guitarist based in Samoa
• Danny Costello (born 1975), English boxer