'''McCollough''' is a surname. Notable people with the surname include:
*Aaron McCollough (born 1971), American poet *Celeste McCollough (1926–2023), American scientist *Clair McCollough (1904–1995), American broadcasting executive *Evan McCollough (born 1987), American football player *Jack McCollough (born 1978), fashion designer *Jaylen McCollough (born 2000), American football player *W. Alan McCollough (born 1950), American businessman
==See also== *McCullagh *MacCulloch *McCulloch *McCullough *McCollough effect, an optical illusion, named after Celeste McCollough
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