Marianna Simnett (b. 1968) is an English artist. She studied at Nottingham Trent University and the Slade School of Art in London. Numerous institutions have hosted solo shows of her work, including the MMK in Frankfurt am Main (2018), the New Museum in New York City (2018), and the Frans Hals Museum in Haarlem (2019). Simnett uses organic materials and her own body for her videos, installation, performances, and sculptures.