Willy Weyres (31 December – 1903 – 18 May 1989) was a German architect and academic teacher. He was from 1944 to 1972, diocesan master builder for the Archdiocese of Cologne for more than ten years, and full professor of architectural history and monument preservation at the RWTH Aachen from 1955 until his retirement in 1972. Under his leadership, the Cologne Cathedral was restored and further developed after the Second World War.