Jonathon Lillis (born August 20, 1994) is an American freestyle skier who competes internationally.

[1] He competed for team USA at the FIS Freestyle Ski and Snowboarding World Championships 2017 in Sierra Nevada, Spain, where he won a gold medal in men's aerials.

In the 2018 Winter Olympics opening ceremony, he wore a glass pendant with some of the ashes of his youngest brother, Michael "Mikey" Lillis, who had died unexpectedly in 2017 at 17 years old.

[3] During the men's aerials event of the 2018 Winter Olympics, Jonathon Lillis wore his late brother's Team USA ski suit.

This biographical article relating to American winter sports is a stub.