Charles Livingston Grimes (July 9, 1935 – February 5, 2007) was an American competition rower and Olympic champion.

Grimes accelerated his four-year course of study, graduating half way through his senior year.

Grimes competed at the 1956 Summer Olympics in Melbourne, where he won a gold medal in eights with the American rowing team.

[1] Grimes was physically imposing[2] and powered the 1956 gold medal Olympic crew in Melbourne where he pulled so much water on his side that there was a problem balancing the boat.

[4] His wife Jane Brown Grimes is the second female Chairperson and President of the USTA.