Michael Cahill
Michael Cahill may refer to:
- Michael P. Cahill (born 1961), American politician in Massachusetts
 - Michael Cahill (Irish politician)
 - Michael Cahill (New Hampshire politician)
 - Michael T. Cahill, American law professor
 - Mike Cahill (filmmaker) (born 1979), American filmmaker
 - Mike Cahill (golfer), (born 1951), Australian golfer
 - Michael Cahill (hurler) (born 1989), Irish hurler
 - Mike Cahill (tennis) (born 1952), American tennis player