The American Champion Three-Year-Old Male Horse is an American Thoroughbred horse racing honor awarded annually in Thoroughbred flat racing.
The award originated in 1936 when both Turf & Sports Digest (TSD) the Daily Racing Form (DRF) began naming an annual champion.
Starting in 1950, the Thoroughbred Racing Associations (TRA) began naming its own champion.
The only disagreement came in 1968, when Turf & Sports Digest named Forward Pass as champion whereas the other two organizations voted for Stage Door Johnny.
Champions from 1871 through 1935 were selected retrospectively by a panel of experts as published by The Blood-Horse magazine.