Gaston Achille Louis Aumoitte (born 19 December 1884 in Hanoi, Vietnam; died 30 December 1957 in Sainte-Foy-la-Grande, France) was a French croquet player and Olympic champion.
He received a gold medal in Singles, one ball at the 1900 Summer Olympics in Paris.He also received a gold medal in Doubles (with Georges Johin), as the only participants in that competition.