Royal Academy of Dramatic Arts
The Miami Valley School
The Neighborhood Playhouse
Appeared in the literary adaptation "The Girl on the Train"
Played voice role in animated comedy "Minions"
Co-starred as CIA official in Melissa McCarthy's "Spy"
Played supporting role in James Brown biopic "Get On Up"
Played supporting role opposite Melissa McCarthy in Ben Falcone's "Tammy"
Co-starred in coming of age comedy "The Way Way Back"
Had recurring role on Showtime drama "Masters of Sex"
Co-starred as Bonnie in CBS dark comedy "Mom" opposite Anna Faris
Co-starred in Jason Bateman's directorial debut "Bad Words"
Cast in Chris Colfer's feature writing debut "Struck by Lightning"
Appeared opposite Eddie Murphy in the comedy-drama "A Thousand Words"
Cast opposite writer and director Josh Radnor in romantic comedy "Liberal Arts"
Played Skeether Phelan's (Emma Stone) cancer-stricken mother in the big-screen adaptation of "The Help"
Cast alongside Anna Paquin, Matt Damon, and Mark Ruffalo in "Margaret"
Cast opposite Matthew Perry on the ABC comedy series "Mr. Sunshine"
Starred in Todd Solondz's dramedy "Life During Wartime"
Cast as Violet Newstead in "9 to 5: The Musical," based on the film of the same name; earned a Tony Award nomination for Best Actress in a Musical
Played the stepmother of a pregnant teen in Jason Reitman's quirky comedy "Juno"
Cast in the big-screen musical "Hairspray" as Prudy Pingleton, Penny's (Amanda Bynes) strict and religious mother
Voiced Gladys, the president of the local homeowners' association in the animated comedy "Over the Hedge"
Co-starred in Arie Posin's ensemble "The Chumscrubber," a darkly satiric story about life crumbling in the midst of a seemingly idyllic suburbia
Co-starred in the drama "Our Very Own"; earned an Independent Spirit Award Nomination for Best Supporting Female
Voiced Peach in the Pixar animated feature "Finding Nemo"
Played the mother in the feature "How To Deal"
Played Sally Lester, the lesbian lover of Clarissa Vaughn (Meryl Streep), in the film version of the award-winning novel "The Hours"
Joined the all-female cast of the comedy-drama telepic "A Girl Thing" (Showtime)
Delivered a memorable supporting role in "Nurse Betty" as an acerbic soap opera writer-producer
Made primetime series debut as C.J. Cregg, the presidential press secretary on the NBC series "The West Wing"
Tackled first Shakespearean role as Kate in "The Taming of the Shrew," opposite Jay O Sanders in NYC's Central Park
Portrayed Chris Cooper's emotionally-detached wife in "American Beauty"
Reunited with Tucci for "The Impostors," playing a con artist aboard a luxury liner
Had featured roles in "Private Parts" and "The Ice Storm"
Returned to Broadway opposite Anthony LaPaglia in "A View From the Bridge"; received Tony nomination
Kanded breakthrough screen role as Ann, the floral shop owner, in "Big Night"; film co-written and co-directed by Stanley Tucci
Made Broadway debut opposite Frank Langella in revival of Noel Coward's "Present Laughter"
Landed recurring role of wisecracking maid on the CBS daytime drama "Guiding Light"
Made feature film debut with a bit role in "The Cowboy Way"
Scored first prominent stage role in "Fat Men in Skirts" by Nicky Silver; first collaboration with Stanley Tucci
Janney was originally announced as part of the cast of the all-star production of "The Seagull" directed by Mike Nichols that was performed in Central Park in the summer of 2001. Because of her commitment to "The West Wing," she had to withdraw and was replaced by Oscar-winner Marcia Gay Harden.
At the start of the filming of the third season of "The West Wing," Janney and co-stars John Spencer, Richard Schiff and Bradley Whitford staged a brief job action by not showing up for the first day of rehearsal. All four had hired a lawyer to renegotiate their contracts as well as sought a pay raise. Negotiations were successful and all parties arrived for work on the first day of filming.
As a teenager, Janney aspired to be a competitive figure skater.
While attending Kenyon College, Janney scored a role in a play directed by Kenyon alumnus Paul Newman.