The Architects' Co-Partnership (ACP) is a firm of English architects, founded in 1939 as the Architects' Cooperative Partnership by recent graduates of the Architectural Association School of Architecture.^[1][2][3] It encouraged teamwork, and set out to be a practice in which all members would be equal.^[1][2]

Its notable buildings include:

• Brynmawr rubber factory (Michael Powers, 1946–52, with Ove Arup), the first post-war building to receive listed status^[1][4]
• Danegrove Primary School (1949–50)^[5]
• Dunelm House, Durham (Richard Raines and Michael Powers, 1966)^[6]
• "Beehives", St John's College, Oxford (Michael Powers, 1958–60), the first modern student accommodation at the University of Oxford^[7]
• St Paul's Cathedral School, London (Leo de Syllas and Michael Powers, 1962–7)^[8]
• University of Essex, Colchester (Kenneth Capon, 1964)^[9]
• Wolfson Building, Trinity College, Cambridge (1968–72)^[10]
• Levi Strauss & Co. UK HQ and distribution centre, Northampton (1999)^[11]