At age five Ryan Malgarini became interested in acting as a result of watching his grandmother acting in commercials.
From that point on, Malgarini would appear as an extra for some of his grandmother's commercials McDonald's and Washington Mutual.
In 2002, Malgarini landed his film debut in the Paramount Classic Film The United States of Leland (released in 2004), playing the six year-old Ryan Gosling in flashback scenes opposite Kevin Spacey. 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 cult comedy hit Freaky Friday starring Jamie Lee Curtis and Lindsay Lohan. 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 New Line Cinema film adaptation of How to Eat Fried Worms (2006), the beloved gross-out children's novel by Thomas Rockwell.
He appeared in pilot The Robinsons: Lost in Space directed by John Woo in 2004 and then going on to co star for two years on the CBS television show Gary Unmarried (directed by James Burrows) as Gary's (Jay Mohr) son Tom in 2008-2010. Gary Unmarried went on to win the 2008 Peoples Choice Award for best new comedy.
Malgarini also appeared in Disney movie of the week Go Figure in 2005. Malgarini has resenly been seen guest starring in roles on Gilmore Girls, Malcolm in the Middle, Harry's Law, Mike an Molly, and Bones.
Most recently his talent will be seen in the independent film The Young Kieslowski as Brian Kieslowski at the 2014 LA Film Festival