Katayoun Riahi (Persian: کتایون ریاحی, romanized: Katâyun Riyâhi; born 31 December 1961) is an Iranian actress, and has received various accolades, including three Hafez Awards, nominations for a Crystal Simorgh, and an Iran Cinema Celebration Award.

[5] Many critics believe that Riyahi's best performance was in the movie The Last Supper (2001), a role which accorded her a Best Actress nomination at the 20th Fajr International Film Festival.

Her outstanding performance in the movie This Woman Won't Talk (2002) earned her a Best Actress Award at the 7th Iran Cinema Celebration.

Riyahi has also appeared in a number of movies, including The Stranger (1987), Apartment 13 (1990), The Kind Moon (1995), Lighter Than Darkness (2002) and Invitation (2008).

About two months later security officers attempted to arrest her in her house, but according to reports, she managed to escape before their arrival.