The American Institute of Architects (AIA) is a professional organization for architects in the United States. It is headquartered in Washington, D.C. AIA offers education, government advocacy, community redevelopment, and public outreach programs, and collaborates with other stakeholders in the design and construction industries.

Henry C. Dudley (1813–1894), known also as Henry Dudley, was an English-born North American architect, known for his Gothic Revival churches. He was a founding member of the American Institute of Architects and designed a large number of churches, among them Saint Paul's Episcopal Cathedral in Syracuse, New York, built in 1884, and Trinity Church, completed in 1858.