Leslie F. Ayres (1906–1952) was an American architect active in Indianapolis, Indiana from 1926 to 1945. Leslie F. Ayres was a well known architect and artist in Indianapolis, Indiana. He was known within the architectural circles for his highly refined and exquisite renderings. Ayres began his career early with the firm of Pierre and Wright. During his time with the firm he was awarded the in 1926, which allowed him to attend Princeton University, and eventually earn his certificate of proficiency in 1927. Upon his graduation from Princeton, he moved back to Indianapolis, and started his own firm. His renderings often done in watercolor and colored pencil were often used to sell the client on a project, and in 1948 stated he was “just about the only professional renderer in Indiana.