Samuel Leland Powers (October 26, 1848 – November 30, 1929) was a United States representative from Massachusetts.

He was admitted to the bar in Worcester County in November, 1875[4] and at that time commenced practice in Boston, and moved to Newton.

He served as one of the managers appointed by the House of Representatives in 1905 to conduct the impeachment proceedings against Charles Swayne, judge of the United States District Court for the Northern District of Florida.

He then resumed the practice of law in Boston, became a trustee of Dartmouth College 1905-1915, was a member of the Massachusetts Board of Education in 1915-1919, served in the State militia for ten years.

[5] and was a trustee of the board of public control for the operation of the Boston Elevated Railway 1918-1928, serving as chairman 1923-1928.