Col. Charles S. Hamilton (May 27, 1882 – June 27, 1968), of Washington, D.C., was noted philatelist who served in the United States Army during the Mexican Revolution.
He was stationed in the United States Army Quartermaster Corps along the Mexican border from 1913 to 1914.
Hamilton became interested in Mexican postage stamps and postal history while serving in Mexico.
While in Mexico, he obtained first hand information on Mexican postage stamp issues, and became an expert on stamps of Sonora and those that were issued by various postal authorities during the Mexican Revolution.
Colonel Hamilton was named to the Mexico-Elmhurst Philatelic Society International Hall of Fame in 1965.