Ralph Chester Williams (July 24, 1888 – December 29, 1984) was an Assistant Surgeon General with the U.S. Public Health Service, with rank of rear admiral.

He served in that role for almost three years, resigning in October 1916 to prepare for examination for entrance into the U.S. Public Health Service.

After the organization made plans to separate, Williams designed the pledge pin and insignia of the new Theta Kappa Psi.

He also served as editor of the fraternity's magazine, and he was recognized as a leader in expansion efforts for Theta Kappa Psi.

Williams was initiated into Tau Kappa Epsilon by the Alpha-Pi chapter at George Washington University in November 1938.

National president (Grand Prytanis) Charles E. Nieman was also forced to resign in 1944 due to pressures from other business activities.