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Mark O'Sullivan

Acting
Updated: Apr 11, 2026
4Total Films
4.5 Highest Rated
Birth Place: Bedford, Bedfordshire, England

About Mark O'Sullivan

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: Acting

Mark O'Sullivan Movies & Career Overview

The filmography of Mark O'Sullivan reflects a career marked by diverse experimentation. Across 4 major appearances, the actor has built a reputation through performances in multiple genres and storytelling styles.

Dominant Genre

A large portion of Mark O'Sullivan's work falls within the Comedy genre, where audiences tend to respond most strongly to their on-screen presence.

Success Ratio

Approximately 0% of Mark O'Sullivan's films maintain ratings above 6.5, indicating a consistent level of audience approval.

One of the most highly rated entries in their career remains Reaper, which stands out as a key performance.

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Best Mark O'Sullivan Movies Ranked

Must-watch hits from Mark O'Sullivan's career based on audience ratings.

★4.5
Reaper (2000) movie poster
★4.5

Reaper: Horror novelist Luke Sinclair retreats to a small town to finish writing his latest book. A young woman is murdered in

Reaper

2000•Thriller
★0.0
Swan (2020) movie poster
★0.0

Swan: Ian has achieved such a high level of British citizenship that he is to be transformed into a swan. We follow Ian and hi

Swan

2020
★0.0
My Sexual Abuse: The Sitcom (2024) movie poster
★0.0

My Sexual Abuse: The Sitcom: Comedian Mark O'Sullivan researches and writes a sitcom about the sexual abuse he survived as a child, and the court cas

My Sexual Abuse: The Sitcom

2024•Documentary
★0.0
My Sexual Abuse: The Sitcom (The Actual Sitcom) (2024) movie poster
★0.0

My Sexual Abuse: The Sitcom (The Actual Sitcom): The actual sitcom, based on the experiences of creator Mark O'Sullivan, a survivor of childhood sexual abuse, who joins

My Sexual Abuse: The Sitcom (The Actual Sitcom)

2024•Comedy

Full Filmography

Every movie Mark O'Sullivan has appeared in, with audience ratings and verdicts.

YearMovieCharacterSuccessMore
2024 My Sexual Abuse: The Sitcom Self Flop Similar →
2024 My Sexual Abuse: The Sitcom (The Actual Sitcom) Mark Flop Similar →
2020 Swan Ted Flop Similar →
2000 Reaper Doctor Flop Similar →

Mark O'Sullivan - Frequently Asked Questions

What is the best movie of Mark O'Sullivan?

According to audience ratings, the best movie starring Mark O'Sullivan is "Reaper" with a rating of 4.5/10.

How many movies has Mark O'Sullivan acted in?

Mark O'Sullivan has been featured in at least 4 major films throughout their career.

What are some other popular movies by Mark O'Sullivan?

Other notable films include "Swan", "My Sexual Abuse: The Sitcom", and "My Sexual Abuse: The Sitcom (The Actual Sitcom)".

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