The American Beauty star will appear in the FX drama's ninth episode, TV Line reports.
She is expected to play a young woman who is linked to the house at the centre of the show.
Her character is also known by the nickname 'The Black Dahlia', a reference to the famous murder victim Elizabeth Short, who died in 1947.
Suvari is best known for her movie work after appearing in films such as American Pie and Loser, but she has also had roles in television shows like Six Feet Under, Psych and The Cape.
American Horror Story airs on Wednesdays at 10pm on FX in the US, and will premiere in the UK on November 7 on FX.