Justin Tyler Berfield (born February 25, 1986) is an American writer, producer and retired actor.

[citation needed] Berfield's first long-running TV role was as Ross Malloy in Unhappily Ever After (1995–1999), in which he appeared in 100 episodes.

In 1995, he (then aged 9) was one of 3000 juvenile actors who auditioned for the role of the young Anakin Skywalker in Star Wars: Episode I – The Phantom Menace.

Berfield's big breakthrough role came in 1999 when Linwood Boomer cast him to play Reese, the trouble-making older brother of Frankie Muniz's title character on the Fox sitcom Malcolm in the Middle (in reality, Berfield is nearly three months younger than Muniz), which premiered on January 9, 2000.

[3] In 2001, Berfield was asked to serve as a National Youth Ambassador for Ronald McDonald House Charities, in which he participated for three years until turning 18.