John Brendan Guinan's art practice includes collage, assemblage, textile, and readymade sculpture. His work examines concepts related to class, religion, displacement, and forms of violence through the reframing of found objects and materials. 

Guinan is an interdisciplinary artist based in Brooklyn, NY. His practice is influenced by his upbringing in the Catholic left emphasizing pacifism, personalism, and Christian Anarchism - along with his experience working with conflict-affected and marginalized communities. He was born at home in the Logan Circle neighborhood of Washington, DC above the homeless shelter and soup kitchen; founded and run by his parents. He later moved to the Palisades, in Upper Northwest. His father, a former Catholic Priest and well known activist and author, J. Edward Guinan (Dec. 2015) was a stalwart in the social justice movement and founder of Community for Creative Non-Violence. Guinan has participated in both solo and group shows in New York, Los Angeles, Washington, D.C., Richmond, and Miami. He was the subject of 'Why I Paint', a documentary produced by Academy Award winning Fine Films in 2018.