William D. Warner FAIA (1929–2012) was an American architect and urban planner in practice in Providence and Exeter, Rhode Island from 1959 to 2012.
[1] Published in 1959, their report, College Hill: A Demonstration Study of Historic Area Renewal, was influential in both local and national preservation practices.
In 1981 a group of three architects, Friedrich St. Florian, Irving B. Haynes and Warner, devised the original scheme for what would become Waterplace Park.
[7] Warner was a 2003 recipient, with Barnaby Evans, of the Kevin Lynch Award and was inducted into the Rhode Island Heritage Hall of Fame in 2004.
[1] In the 1970s they purchased Locust Valley Farm in Exeter, where he would live and work for the rest of his life, building a house on the property and moving his practice into Lawton's Mill.