Chellsie Marie Memmel (born June 23, 1988) is a retired American artistic gymnast. She is the 2005 world all-around champion (the third American woman, after Kim Zmeskal and Shannon Miller, to win that title) and the 2003 world champion on the uneven bars. She was a member of the United States women's gymnastics team at the 2008 Olympics.

Chelssie Lopez is an American soccer player from St. Hedwig, Texas who plays as a midfielder.

Chelli may refer to: