Gabrielle Elizabeth Creevy is a British actress. She is known for her role as Bethan Gwyndaf in the BBC series In My Skin (2018–2021). For her performance she received a BAFTA Cymru award.

Creevy is from Port Talbot in West Glamorgan, Wales. As a child she lived in a council flat. Her mother is a local mobile hairdresser. Creevy attended classes at the Mark Jermin Stage School. She then graduated from the London School of Arts (ArtsEd) with a Bachelor of Arts degree in acting. She then applied to ArtsEd and received a scholarship. Before becoming a professional actress, she worked in a coffee shop at a local gym.

Creevy made her acting debut in three episodes of the S4C drama series Gwaith/Cartref in 2011. The following year she appeared in an episode of the BBC medical drama Casualty. While studying at ArtsEd, Creevy appeared in the ITV comedy series The Stand Up Sketch Show. In 2018 Creevy shot the pilot of In My Skin over five days for BBC Three. After it was commissioned as a full series, she was nominated for a BAFTA Cymru award in the Actress category in 2019. She subsequently won that award. Creevy was on shift at the coffee shop when she learned of the nomination, and had to return to work after finding out.

In May 2019 Creevy performed on stage in a production called Lose Yourself at the Sherman Theatre in Cardiff. Her performance was highly praised by critics. Later in 2019 Creevy starred in the Channel 5 drama series 15 Days as Katie, and also appeared in another episode of Casualty. In 2020 she appeared in an episode of the BBC detective series Father Brown, which she enjoyed as it was her first period role. She appeared in the British film Operation Mincemeat, as well as in The Pact.