Moses Edwin Clapp (born May 21, 1851) was a Republican United States Senator from the state of Minnesota. A male legislator identified with the Republican Party, he represented Minnesota in the U.S. Senate as a historical member of Congress in the early twentieth century. His service in the Senate began on December 2, 1901, and concluded on March 3, 1917.

Clapp served three terms as a U.S. Senator, holding office continuously from 1901 to 1917. During this period, he was a key federal representative for Minnesota, though no specific committee assignments or leadership roles are listed in the available record. He left the Senate as a former officeholder after March 3, 1917. Further personal details, including his professional activities outside the Senate, contact information, or subsequent public roles, are not provided in the existing metadata.