Jansen Panettiere (/ˌpænətiˈɛər/ PAN-ə-tee-AIR; September 25, 1994 – February 19, 2023) was an American actor, known for his roles in films The Secrets of Jonathan Sperry, The Perfect Game, The Martial Arts Kid, and How High 2.

He has also provided several voice roles, including Periwinkle in the sixth and final season of the Nick Jr. children's live-action/animated TV series Blue's Clues, young Stripes in Racing Stripes, young Rodney Copperbottom in Robots, Truman X in the Nickelodeon animated TV series The X's, and Shovelmouth Boy in Ice Age: The Meltdown.

The Perfect Game is directed by William Dear, based on the true story of how a group of boys from Monterrey, Mexico become the first non-U.S. team to win the Little League World Series.

Panettiere also co-stars with Gavin MacLeod in The Secrets of Jonathan Sperry, a film directed by Rich Christiano about faith and friendship.

Panettiere died of aortic valve complications arising from cardiomegaly in Nyack, Rockland County, New York, U.S. on February 19, 2023,[5][6] at age 28.