Lilian "Lily" Beaurepaire (born 15 September 1893 in Lorne, Victoria) was an Australian woman swimmer and diver who represented Australia at the 1920 Summer Olympics at Antwerp. She was a sister of Frank Beaurepaire who also represented Australia in swimming at these and other Olympics.
In 1920 she competed in the Women's 100m freestyle, 400m freestyle and Plain High Diving.