Has a younger sister, Abigail Breslin.Was discovered at a New York playground at the age of three在妹妹電影《姐姐的守護者》首映式上
According to a December episode of The Tonight Show with Jay Leno, he admitted to giving his best friend of six years actress Skye McCole Bartusiak paper clips and an action figure as a Christmas gift
Was listed as a potential nominee on the 2004 Razzie Award nominating ballot. He was suggested in the Worst Supporting Actor category as well as Worst Screen Couple with co-star Dakota Fanning in the film The Cat in the Hat (2003). He failed to receive either nomination.
In Raising Helen (2004), his on-screen sister was played by his real-life sister, Abigail Breslin.
He and sister Abigail Breslin have an older brother Ryan.
His girlfriend is childhood friend Skye McCole Bartusiak.
Breslin was born in New York City, the son of Kim, a personal manager, and Michael Breslin, a telecommunications expert.Spencer is the older brother of actress, Abigail Breslin (born April 14, 1996) and younger brother of Ryan Breslin (b. 1985).
He has appeared in films such as Disney's The Kid, The Santa Clause 2, The Cat in the Hat, You Wish!, and Zoom. He has also been involved in the world of animation by lending his voice to the television cartoon Teamo Supremo, with the same year's Return to Neverland offering even more vocal work. He reprised his role of Curtis in The Santa Clause 3, which opened on November 3, 2006, taking the tally of movies in which he co-starred with Tim Allen up to four.
In 2004, he and his real life younger sister Abigail Breslin played on-screen siblings in Raising Helen. They once again starred together in 2004's Princess Diaries 2, in which Spencer played a prince and Abigail made a cameo as a girl at an orphanage. Abigail was also in The Santa Clause 3, in which Spencer played Curtis, the head elf.
In Summer, 2007 he helped form alternative rock trio The Dregs, with Harold co-star Evan Daves and musician Paul DeMasi. On July 7, 2007, he presented at the American leg of Live Earth. He is currently finishing recording his debut album. It is being recorded by Ladybug Transistor's, Gary Olson.
He lives in New York City with his family, and travels to Los Angeles for movies and auditions.
參演作品
2010
量子戰爭（Quantum Quest: A Cassini Space Odyssey 為Anthony配音
在妹妹電影《姐姐的守護者》首映式上
《帽子裡的貓》首映會上與達科塔·范寧