List of awards and nominations received by Allison Janney

Allison Janney is an American actress who has received numerous nominations and has won multiple awards, including an Academy Award, a BAFTA Award, a Golden Globe Award, six Critics' Choice Awards, seven Screen Actors Guild Awards, seven Primetime Emmy Awards, two Drama Desk Awards and two nominations for the Tony Award.

After numerous years of minor supporting roles in films and television, Janney's breakthrough came with her portrayal of C. J. Cregg on the NBC political drama The West Wing, which earned her four Primetime Emmy Awards, four Screen Actors Guild Awards, and four nominations for the Golden Globe Award. She earned further Emmy wins for her performances on television series Masters of Sex and Mom, bringing her cumulative wins to seven. By virtue of this, she is the second most awarded thespian in the history of Emmy Awards (along with Ed Asner).

For her work on Broadway, Janney has received two Drama Desk Awards, three Outer Critics Circle Awards, the Clarence Derwent Award, the Theatre World Award, four nominations for the Drama League Award and two nominations for the Tony Award.

Janney has starred in various acclaimed films including American Beauty (1999), The Hours (2002), Hairspray (2007), Juno (2007), The Help (2011) and Bombshell (2019). All these films earned her nominations at the Screen Actors Guild Awards and Critics' Choice Movie Awards for Best Ensemble, winning for the first and the penultimate films. For her portrayal of LaVona Golden in the 2017 biographical film I, Tonya, Janney won the Academy Award, BAFTA Award, Critics' Choice Movie Award, Golden Globe Award, Independent Spirit Award, and the Screen Actors Guild Award for Best Supporting Actress.