James Russell Leech (November 19, 1888 – February 5, 1952) was a Republican member of the U.S. House of Representatives from Pennsylvania.
J. Russell Leech was born in Ebensburg, Pennsylvania.
During the First World War, he was appointed as a second lieutenant and served with the Seventh Ammunition Train.
Leech was elected as a Republican to the Seventieth, Seventy-first, and Seventy-second Congresses and served until his resignation on January 29, 1932, having been appointed a member of the United States Board of Tax Appeals (now the United States Tax Court) to fill a vacancy.
He was reappointed in 1934 and again in 1946, and served on this court until his death in Chevy Chase, Maryland.