Omega Psi Phi is an international historically Black fraternity. It was founded in 1911 at Howard University in Washington, D.C. The fraternity has both undergraduate (college) and graduate chapters. Its intermediate chapters are a combination of the two as a citywide organization.
The following list of college chapters is ordered by charter date, with active chapters indicated in bold and inactive chapters and institutions are in italics.
The first graduate chapter of Omega Psi Phi was chartered in Norfolk, Virginia, on June 1, 1920. In 1922, Omega Psi Phi began using the suffix "Omega" to designate graduate chapters. In 1923, the fraternity decided that all of its graduate chapters would have names ending in Omega. As a result, the existing graduate chapters with single-letter names were renamed.
The following list of graduate chapters is ordered by charter date, with active chapters indicated in bold and inactive chapters in italics.