Samuel Riley Sells (August 2, 1871 – November 2, 1935) was an American politician and a member of the United States House of Representatives for the 1st congressional district of Tennessee.

Sells was born on August 2, 1871, in Bristol, Tennessee, in Sullivan County son of George Washington and Mary Margaret McCrary.

During the Sixty-sixth Congress, he was the chairman of the United States House Committee on Pensions.

Resuming the lumber business in Johnson City, Tennessee, Sells also engaged in the manufacturing of shale brick and in numerous other enterprises.

Sells died in Johnson City, Tennessee, on November 2, 1935 (age 64 years, 92 days).