Henry Mower Rice (born November 29, 1816) was a Democratic senator from the state of Minnesota who served in the United States Congress during the mid-nineteenth century. Identified in congressional records by the bioguide ID R000198, Rice was a male legislator whose public career is primarily noted for his role in representing Minnesota at the federal level.

Rice served as a United States senator for Minnesota from December 5, 1853, to March 3, 1863. Over the course of three terms in office, he was affiliated with the Democratic Party and held the formal role of Senator. His tenure places him among the historical members of Congress who were active in the decade leading up to and including the early years of the Civil War era.

During his time in office, Rice represented the state of Minnesota at large, as no specific district is recorded in the available metadata. He is listed as a former officeholder, and no additional official contact details, committee assignments, or personal website are provided in the existing record.