Lillie Carmichael Keenan (born 4 October 1996) is an American show jumping rider.

[9] Keenan topped the professional riders to win the USHJA International Hunter Derby Championship on C Coast Z at 14 years old.

[23] In 2014, she was given the opportunity to jump her first Nations Cup at the age of 17 at competitions in Ascona (SUI) and Bratislava (SVK).

[3] That year she also jumped at major shows such as world cup qualifier events and The Hampton Classic.

In 2015, while a freshman at Harvard University, Keenan declared as a professional rider, and also moved her training to Cian O'Connor's Karlswood Stables.

O'Connor was brought on to help Keenan learn the European system, how to train horses up and manage her own stable.

[1] In September, following the World Equestrian Games, Keenan moved her training to McLain Ward's Castle Hill Farm.

[26] Her current horses include Fasther, Cazaan, Skyhorse, Agana Van Het Gerendal Z, Be Gentle, Chaccolette, and Super Sox.