Vonnegut & Bohn was an architectural firm in Indianapolis, Indiana in the United States.

Founded in 1888 by Bernard Vonnegut Sr., FAIA (1855–1908) and Arthur Bohn (b.

The firm was responsible for many public, institutional, commercial, religious and residential buildings throughout Indiana, particularly in Indianapolis.

[1] In 1946, Kurt Vonnegut Sr. merged the firm with George Caleb Wright (b. April 25, 1889) of Pierre & Wright and Ralph Oscar Yeager (b. August 16, 1892) of Miller & Yeager (of Terre Haute, Indiana) forming Vonnegut, Wright & Yeager, which was located at 1126 Hume Mansur Building, Indianapolis, Indiana and 402 Opera House Building, Terre Haute, Indiana.

[3] Kurt Vonnegut Sr. was the father of author Kurt Vonnegut Jr., and is referred to, with the rest of the author's family, in many of his books.