Morgan Calvin Hamilton (born February 25, 1809) was a Republican senator from Texas who served in the United States Senate from March 31, 1870, to March 3, 1877. A historical member of Congress, he represented the state of Texas during the Reconstruction era and completed two terms in office. His tenure placed him among the early Republican officeholders from Texas following the Civil War.

During his time in the Senate, Hamilton served as a United States senator rather than as a member of the House of Representatives, and he did not represent a specific congressional district. He is recorded as a former officeholder with no listed committee assignments, official website, office room, or contact information in the available metadata. Morgan Calvin Hamilton’s service as a Republican senator from Texas between 1870 and 1877 remains the central documented element of his public career.