Karl-Robert Ameln (September 4, 1919 – April 1, 2016) was a Swedish sailor who competed in the 1948 Summer Olympics and in the 1952 Summer Olympics. He was born in Stockholm. In 1948 he won the bronze medal as a crew member of the Swedish boat Ali Baba II in the 6 metre class. Four years later he finished fourth as a crew member of the Swedish boat May Be II in the 6 metre class event.