Mark O'Sullivan

Acting · Bedford, Bedfordshire, England

Mark O'Sullivan is a producer, actor, and writer known for Tell Me Everything (2022), Lee and Dean (2017) and My Sexual Abuse: The Sitcom (The Actual Sitcom) (2024). Mark won an RTS award in 2025 for his documentary (and sitcom episode) My Sexual Abuse: The Sitcom, made by Swan Films for Channel 4, was awarded the best Arts programme for 2025.

Known for

7.9

The Nevers

2021 · Series · Orderly

6.0

Lee and Dean

2018 · Series · Dean

5.4

Reaper

2000 · Doctor

Swan

2020 · Ted

Directed

My Sexual Abuse: The Sitcom (The Actual Sitcom)

2024 · Director

All acting credits