Louis Fox (died c. December 4, 1866) was an American professional billiards player in the mid-19th century who was briefly the U.S. champion.
He is well known for an incident which may or may not have actually happened: He is alleged to have died by suicide as the result of losing a match after a fly interfered with play.
Washington Hall, since demolished, stood at the northeast corner of Main and Clinton, about three blocks east of the Genesee.
The classic version of the story is that Fox was on his way to victory when a fly settled on the cue ball.
The stunned Fox left the billiard hall and took his own life by diving into the Genesee River.