List of United States senators in the 3rd Congress

This is a classification of United States senators during the 3rd United States Congress listed by seniority, from March 4, 1793, to March 3, 1795.

The order of service is based on the commencement of the senator's first term, with senators entering service the same day ranked alphabetically. The Senate subsequently assigned a consecutive official number to each senator, which is the second number given in the table.

During this time, there were no official parties, but senators are labeled as Pro-Administration (P), and Anti-Administration (A). Towards the end of the Congress, Stevens T. Mason of Virginia is classified in the Chronological List of United States Senators as a Democratic-Republican (DR) and Henry Latimer of Delaware as a Federalist (F).