• New York: Bess Cutler Gallery, Artisgra, Raw Gallery, and Munson, Williams, Proctor Institute.

• United Kingdom: Eton Art Gallery, Redfern Gallery, Beaux Arts, Long & Ryle, Lynne Strover Gallery. Penwith Gallery, Contemporary Art Society, Glyndebourne Opera House, Houldsworth Fine Art, John Martin, Southampton Museum, Spacex Gallery, Barbican, The Hunterian Museum, The Hunting Prize Exhibition, Royal Academy, Victoria Gallery.

• Ireland: Hunt Museum, West Cork Arts Centre, Solomon Gallery, Cunnamore Galleries, SCOIP.

Works by Ian Humphreys have been acquired by a number of public and corporate collections, including British Rail Board, Burmah Castrol, Coopers & Lybrand, Cork University Hospital, Glaxo Smithkline, James Capel, JP Morgan, Lawfords, Reading Museum & Art Gallery, Tate & Lyle Sweeteners, University College Cork, and Trinity College, University of Cambridge.