Lauren Tom (born August 4, 1961) is an American actress and voice actress. She is known for voicing Numbuh 3 in Cartoon Network's Codename: Kids Next Door. She provided additional voices for Teacher's Pet, Alice Kane in Pepper Ann, Yoshiko in Kim Possible, various characters on Fillmore!, Princess Su in Mulan II, various characters in W.I.T.C.H., Tasumi in The Replacements, additional voices on Phineas and Ferb, Susan Long & Councilor Chang on American Dragon: Jake Long, and Mrs. Kobayashi on Penn Zero: Part-Time Hero.
She also played Lois in the 2003 Miramax film Bad Santa, Lena St. Clair in The Joy Luck Club, Claudia Ford in Escape to Witch Mountain and Amy in the 1994 Touchstone Pictures film When a Man Loves a Woman. She plays Celia Mack in Andi Mack.