Ryan Timothy Malgarini (born June 12, 1992) is an American actor, best known for his role as Harry Coleman in Freaky Friday (2003) and its sequel Freakier Friday (2025).
Malgarini's paternal grandmother was actress Gloria (née Grey) Malgarini.
In 2002, Malgarini made his film debut in The United States of Leland (released in 2003), playing a six year old boy in flashback scenes. This was a rather challenging role for Malgarini, since it required him to weep for the first time on screen in a funeral scene. In 2003, he played the role of Harry Coleman in Disney's comedy hit Freaky Friday, starring Jamie Lee Curtis and Lindsay Lohan. He appeared with Tom Hanks in a test film to develop the "performance capture" technology for The Polar Express in 2004.
Malgarini appeared as Benjy in the film adaptation of 2006 of How to Eat Fried Worms, the beloved gross out children's novel by Thomas Rockwell. According to an interview with Malgarini on his official site, he starred as the main character Ugly in the musical Honk!. He appeared in ' in 2004. He appeared in Gary Unmarried as Gary's (Jay Mohr) son Tom.
Malgarini also appeared in Go Figure in 2005. In 2011, Malgarini guest starred in the CBS sitcom Mike & Molly.
As of 2021, Malgarini works as an acting coach for The AFA Studio in Toluca Lake, California.
In 2025, Malgarini reprised his role of Harry Coleman in the Freaky Friday sequel film Freakier Friday.
Malgarini began dating Kristen Stubbe in September 2022. They became engaged on December 18, 2024 after two years of dating.