Sareh Bayat (Persian: ساره بیات; born 6 October 1979) is an Iranian actress. She began her career in theatre in 2001 and, after studying acting, appeared in the television series A Fistful of Eagle Feathers in 2007. Her first cinematic role was in the film Imitator of Satan.

Bayat received critical acclaim for her supporting role in the award-winning film A Separation (2011), for which she, along with the female ensemble, won the Silver Bear for Best Actress at the Berlin International Film Festival. She was also nominated for the Crystal Simorgh for Best Actress at the Fajr Film Festival for her leading roles in Oblivion Season (2013), We Won't Get Used to It (2015), and Almond Eyes (2024).

Sareh Bayat was born on 6 October 1979 in Tehran, Iran. She graduated with a degree in carpet design and trained in acting at the Karnameh Institute. Bayat began performing in theatre at age 22 and made her television debut in 2007 with A Fistful of Eagle Feathers. Her parents initially opposed her pursuit of acting, leading her to secretly study art at university to enter the profession.

Bayat grew up in a family of four and has a younger sister named Sarvin, who is married to Reza Ghoochannejhad, an Iranian footballer.

She is married to Alireza Afkari, an Iranian composer and music arranger.

Bayat holds a degree in carpet design and is an ambassador for Iranian handicrafts. She began her acting career in 2001, performing in theatre, television, and film, having trained at the Karnameh Institute. In addition to acting, she engages in costume design and painting. Her cinematic debut was in Imitator of Satan (2006).

In 2011, she was cast in A Separation, earning the London Film Critics' Circle Award for Best Supporting Actress and, alongside Leila Hatami, Sarina Farhadi, and Kimia Hosseini, the Silver Bear for Best Actress at the Berlin International Film Festival. In 2017, she won the Best Actress award at the Hafez Awards for her role in the series Asheghaneh.