Harry Cook (born 12 June 1991) is a British-Australian actor and writer.
Born in Croydon, South London, Cook moved to Australia with his family in 2001 when he was ten years old. He completed his Year 10 school certificate at TAFE before working in retail and pursuing acting work.
Cook is best known for his roles in early 2000s films such as Accidents Happen (2009), My Place (2009), Caught Inside (2010), Panic at Rock Island (2010), Drown (2015) and I Love You Both (2015). His role in Drown earned him a Best Supporting Actor Award at FilmOut San Diego in 2015.
Cook came out as gay in 2013. He was at the forefront of the fight for marriage equality in Australia. In 2016, Cook was nominated as LGBTQ Celebrity of the Year at the inaugural Australian LGBTQ Awards held at the Sydney Opera House for his work as an openly gay activist and actor. He was nominated again the following year, and was nominated for the LGBTI Local Icon Award at the 2019 Australian LGBTI Awards.
In September 2018, Cook's debut memoir, Pink Ink, was released to largely positive reviews. His debut young adult novel, Fin & Rye & Fireflies, was released in August 2020 through Black and White Publishing's imprint Ink Road Books. It won the Scottish Teenage Book Prize in 2022. In 2021, Cook released his second YA novel, Felix Silver, Teaspoons & Witches, via Duet/Interlude Press, an imprint of Chicago Review Press, to mixed reviews. Kirkus Reviews wrote that "the cobweb-thin plot is less than enchanting", "the characters are not deeply developed" and "all main characters are coded as white". Publishers Weekly described the plot as "thinly developed" and "hurtling toward a familiar conclusion", but complimented Cook's "accessible prose".
Since the October 7 attacks and the outbreak of the Gaza war Cook has been a vocal critic of Israel. Some of his commentary has attracted public criticism, including social media posts mocking Judaism, posts hoping that Iran will kill "10.8 million Israelis" or the entire civilian population of Israel, and claims that the 2025 Bondi massacre and the 2001 September 11 attacks were "false flags" organized by Israel.
Cook is an ambassador for the Geena Davis Institute.
Cook has described himself as sober and has discussed his recovery from drug and alcohol addiction.
He married Liam Davis in November 2015 in Carmel, California. They announced their separation in 2019.