Rudolf F. Haffenreffer III (c. 1902 – April 28, 1991) was a Rhode Island industrialist and philanthropist. Among his numerous family enterprises he was best known for his role as president and chairman of the Narragansett Brewing Company. He also gained ownership of the Mount Hope Bridge through receivership in 1931. In 1955, Haffenreffer donated 376 acres (1.52 km2) of wooded shorefront property in Bristol, Rhode Island to Brown University to create what became the Haffenreffer Museum of Anthropology.
- "Rudolf F. Haffenreffer Room". Mount Hope Farm. 2007. Archived from the original on 20 December 2010. Retrieved 25 October 2011.
- "About the Farm: Mount Hope Farm, from Settlement to the Present". Mount Hope Farm. Retrieved 25 October 2011.
- "Rudolf F. Haffenreffer 3d, Industrialist, 88". The New York Times. Associated Press. 1 May 1991. Retrieved 25 October 2011. Obituary.