List of Famous people with last name Treacy

Philip Anthony Treacy is an Irish award-winning haute couture milliner, or hat designer, who has been mostly based in London for his career, and who was described by Vogue magazine as "perhaps the greatest living milliner". In 2000, Treacy became the first milliner in eighty years to be invited to exhibit at the Paris haute couture fashion shows. He has won British Accessory Designer of the Year at the British Fashion Awards five times, and has received public honours in both Britain and Ireland. His designs have been displayed at the Victoria and Albert Museum and the Metropolitan Museum of Art.

Eric Treacy, was an English railway photographer and Anglican bishop.

Seán Daniel Treacy was an Irish Labour Party politician who served as Ceann Comhairle of Dáil Éireann from 1973 to 1977 and 1987 to 1997. He served as a Teachta Dála (TD) for the Tipperary South constituency from 1961 to 1997. He also served as a Member of the European Parliament (MEP) for the Munster constituency from 1981 to 1984.