LEO COSTELLOE (b. 1993, Canberra) is a London-based, Irish-Australian artist whose work explores the transient and sentimental nature of objects in culture. Across sculpture, photography, moving image and writing, Costelloe draws from lexicons of femininity, adornment, material traditions, and biographical detail. Working with glass, silversmithing, hair, flowers and found objects, Costelloe recasts familiar decorative and utilitarian signifiers and reframes objects’ presupposed meanings and unsettle conventional ideas of decoration, utility, gender, and class.

Costelloe has presented solo exhibitions at NEVEN, London (2024, 2026); The Shop at Sadie Coles HQ, London (2025); Ridley Road Project Space, London (2022); and Kupfer, London (2023). Their work has been featured in group exhibitions at 4COSE, London, curated by Rose Higham-Stainton and Iska Lupton (2026); DKUK, London, curated by Mariana Lemos and Dot Jia (2026); Felix Art Fair, Los Angeles (2026) with Carlye Packer; ZÉRUÌ, London (2026); CAIM, Slane Castle, Ireland (2025); NADA New York (2025); Matt Carey-Williams, London (2024); Studio West Gallery, London (2024); Indigo + Madder, London (2023); The Stanley & Audrey Burton Gallery, Leeds (2023); General Assembly, London (2023); Photobook Gallery, London (2023); and Ridley Road Project Space, London (2022). In 2025, Dean’s Bottom published Costelloe’s debut book of prose and photography, Kitchen. Costelloe graduated from Central Saint Martins with a BA (Hons) in Jewellery Design and was awarded the Swarovski Scholar Award in 2020.