Louis Alfred "Pinky" Clarke (November 23, 1901 – February 24, 1977) was an American athlete, winner of a gold medal in 4x100 m relay at the 1924 Summer Olympics.
Clarke was Jewish, and was born in Statesville, North Carolina. Clarke won, as a Johns Hopkins University student, the NCAA 100 yd (91 m) championships in 1923.
At the Paris Olympics, Clarke ran the second leg in the American 4x100 m relay team, which won the gold medal in a new world record of 41.0.
Clarke also held the world indoor 100 y record, at 9.8 seconds, in February 1924.
Clarke died in Fishkill, New York aged 75.