Hedda Stiernstedt (born 3 December 1987 in Stockholm) is a Swedish actress.

She began her career in the early 2010s, appearing in various films and television series. She secured her breakthrough television role in 2017 by portraying Nina Löwander in the drama series The Restaurant (Vår tid är nu), a performance that earned her the Kristallen Award for Best Actress in 2018. In cinema, she has notably starred in the films My Father Marianne (Min pappa Marianne, 2020), Se upp för Jönssonligan (2020), and the musical drama Nova & Alice (2024).