Gay O'Neill was born in Ireland and educated in Dublin and Switzerland. She studied at the National College of Art before joining the Graphic Studio in the late 60s, where she began etching under the guidance of Patrick Hickey and John Kelly. Her etchings are figurative and linear, using aquatint for tonal effect. Her drawings have been exhibited in the Women's Association, London and along with her etchings she has exhibited throughout Ireland and the U.K.
Work includes: producing large paintings for private collections, prints for interior design projects (both private and commercial). Her works also hang in various private collections in London, New York, Spain, Germany, Australia and Brussels.