Oluwunmi Olapeju Mosaku (; born 31 July 1986), known professionally as Wunmi Mosaku, is a Nigerian and British actress. She rose to prominence for her roles as Joy in the BBC Two miniseries Moses Jones (2009) and Holly Lawson in the ITV series Vera (2011âÂÂ2012). She won the BAFTA TV Award for Best Supporting Actress for her role as Gloria Taylor in the TV film Damilola, Our Loved Boy (2016). In 2019, she appeared in the fifth season of Luther, followed by her role as Ruby Baptiste in HBO's Lovecraft Country (2020). She portrayed the character Hunter B-15 in the Marvel Cinematic Universe (MCU) Disney+ series Loki (2021âÂÂ2023) and reprised the role in the film Deadpool & Wolverine (2024).
Mosaku was nominated for the BAFTA for Best Actress and won the BIFA for Best Performance by an Actress in a British Independent Film for her role as Rial in the film His House (2020). For her performance as Annie in the 2025 horror film Sinners, Mosaku won the Gotham Independent Film Award for Outstanding Supporting Performance and BAFTA Award for Best Actress in a Supporting Role, and was nominated for an Academy Award, a Critics' Choice Movie Award, and an Actor Award.
Mosaku was born in Zaria, Nigeria, to Yoruba parents who were both professors. When she was one year old, the family emigrated to Manchester, England, where she was raised and attended the Trinity Church of England High School and Xaverian Sixth Form College. She sang for eleven years in the Manchester Girls Choir. Her mother started a business and her father eventually returned to Nigeria. Mosaku studied acting at the Royal Academy of Dramatic Art (RADA), graduating in 2007 with a BA degree in Acting (H Level).
Mosaku made her professional stage debut in 2007, at the Arcola Theatre in a production of Pedro Calderón de la Barca's The Great Theatre of the World. In 2008, she appeared in Rough Crossings, directed by Rupert Goold and based on the book by Simon Schama, at the Lyric Hammersmith; The Vertical Hour (2010), by David Hare, and Truth and Reconciliation (2011), both at the Royal Court Theatre.
In 2008, she appeared in the first of the UNDEREXPOSED exhibitions at the National Portrait Gallery, designed to raise the profile of black role models and celebrates the talent that exists among the Black British community. Her photo also appeared on Commercial Way, Peckham, London, as part of the exhibition. In 2009, she starred in the BBC Two series Moses Jones, for which she won Best Actress in a Miniseries at the Rome Fiction Festival.
She featured on the front cover of Screen International magazine JuneâÂÂJuly 2009, as one of the UK Stars of Tomorrow, and in 2011 was featured in Nylon Magazines 2011 Young Hollywood issue. In 2010, Wunmi Mosaku was named one of The Seven Fresh Faces of Toronto International Film Festival, for I Am Slave, in which she starred. She plays Malia, a girl who has been kidnapped from her village in Sudan and sold into slavery. Her performance garnered several awards: Best Actress at the Birmingham Black Film Festival, Best Onscreen performance at the Cultural Diversity Awards, and Best Female performance at the Screen Nation Awards.
In 2011, Mosaku appeared in Vera in the role of Holly Lawson. In 2015, Mosaku played the part of Quentina, a traffic warden, in the three-part BBC series Capital, based on John Lanchester's novel of the same name. In 2016, she appeared in Playtest, an episode of the anthology series Black Mirror. She won the British Academy Television Award for Best Supporting Actress for playing Gloria Taylor in the television film Damilola, Our Loved Boy (2016).
In 2025, Mosaku appeared as the hoodoo healer Annie in Ryan Coogler's vampire film Sinners. The New York Times called her performance "the soulful core" of the movie. She later received a nomination for the Academy Award for Best Supporting Actress for her performance at the 98th Academy Awards. Sinners led the field with a record 16 total nominations, including Mosaku's supporting acting nomination.
When asked to list her personal heroes, Mosaku included her grandmother Anike Adisa, whom she described as having "taught me so many lessons"; actor Albert Finney, who was her inspiration for attending RADA; her colleague and former instructor at RADA, William Gaskill; Paul Newman, whom she admired, not just for his acting, but also for his philanthropic efforts with Newman's Own; and Oprah Winfrey, whom Mosaku considers "a superwoman".
Mosaku moved to Los Angeles, California in 2018, and married American talent and literary manager Tash Moseley two years later. They welcomed a daughter in 2024, and are currently expecting their second child. Mosaku has been taking Yoruba language lessons since 2020.
During Donald Trump's second presidential term, Mosaku publicly criticized the administration's immigration enforcement policies on various occasions. In a February 2026 interview with The Sunday Times, she stated that she was unable to celebrate her Oscar nomination in light of recent deaths connected to federal immigration enforcement in Minnesota, describing the political climate as "truly dystopian."