Ruth Platt is a British actress, writer and director, who has appeared in The Pianist (2002).

Platt studied English literature at University College, Oxford, before training at RADA.^[1]

In 2015, Platt directed a British horror film, The Lesson^[2] which was inspired by Platt's own experience and an article she read where a teacher had a history of violence.^[3] In 2019, she directed The Black Forest which screened at Edinburgh International Film Festival.

• The Prince and the Pauper (2000) as Sarah
• The Pianist (2002) as Janina Bogucki^[1]
• The Lesson (2015) as director
• The Black Forest (2019) as director
• Martyrs Lane (2021) as director

• Bad Girls (series 5) (2003)
• Heartbeat