Alan Muraoka was born in Mission Hills, Los Angeles. Muraoka's first experience as a performer came at the age of ten, where he appeared as "The Candy Man" at a movie theatre during the intermission of a double feature. According to the biography on his official site, he performed throughout high school where he also had his first experience as a director - Who's Afraid of Virginia Woolf?.
Muraoka studied at the Theater Department of UCLA and won the Carol Burnett Musical Theatre Award for performance. While at college, he performed in several Walt Disney World productions during sabbaticals and summer breaks. He received his B.A. in Theatre Arts from UCLA in 1985.
Muraoka then worked with East West Players in Los Angeles, and spent time as a performer on Princess Cruises.
He made his Broadway debut performing six roles in the musical Mail. After Mail opened (and closed, after one month) in 1988, Muraoka remained in New York City.
For the next ten years, Muraoka continued to act in theatrical productions, both on Broadway and in regional and touring productions. Most notably, he was a member of the original cast of Shogun: The Musical on Broadway and had a long run in the lead role of "The Engineer" in Miss Saigon.
After auditioning several times through 1997, Muraoka won a part on Sesame Street after doing improv with Telly Monster. He joined the cast in 1998, playing Alan, the new owner of Hooper's Store. In his debut episode (#3786, the pilot episode for the 1998-1999 Season; first airing November 16, 1998), Alan is introduced to the other characters on the street by Big Bird in a scene that ends with the song Welcome to the Party.
While appearing in Sesame Street, Muraoka has continued to perform in theater, most recently earning good reviews in the 2004 Broadway revival of Pacific Overtures. He also appeared in the PBS Emmy nominated special, Day of Independence from Cedar Grove Productions in 2003. In 2007 he had a small part on Showtime's series Brotherhood as Li Fang, the owner of a Rhode Island brothel.
As a director, Muraoka was highly praised for his work on the seemingly incongruous, non-traditional (all-Asian) version of William Finn and James Lapine's largely Jewish musical Falsettoland for the National Asian American Theater Company in New York in 1998. Peter Marks of The New York Times wrote about the production "Does the gambit work? Let's put it this way: You should be so talented."
In 2004 he directed veteran Sesame Street and Avenue Q puppeteers John Tartaglia, Stephanie D'Abruzzo, and Jennifer Barnhart in Empty Handed and John Tartaglia AD-LIBerty. He also directed Ann Harada, of Avenue Q and also his 1998 Falsettoland, in her 2004 one-woman show and in her one-night-only benefits for Broadway Cares/Equity Fights AIDS Christmas Eve with Christmas Eve in 2009, 2010 and 2011.
In 2007, he directed the stage production of High School Musical at the Lyric Theatre in Oklahoma City. He also directed The Muny's 2008 production of High School Musical in St. Louis winning praise for drawing "appealing performances from his attractive young leads.".
In 2007, Muraoka joined the Stage Directors and Choreographers Society.
In 2009, he directed Urinetown: The Musical at Trinity University in San Antonio, TX. He was hired on for the semester as the university's "Stieren Guest Artist." In addition, he taught a class on musical auditioning techniques and gave a lecture for the public.
Alan Muraoka is active with many Asian American organizations. In 2004 he was honored with the Inspiration Award from APEX, a mentoring organization in New York City.