Lewis Herbert Martell (26 March 1885 – 24 August 1962) was a Liberal party member of the House of Commons of Canada.
He was born in Main-à-Dieu, Nova Scotia and became a lawyer.
The son of John Thomas Martell and Rachel A. Lewis, he was educated at the Sydney Academy, King's College and Dalhousie Law School.
Martell practised law in Windsor, Nova Scotia.
After completing his only term, the 14th Canadian Parliament, Martell left federal politics and did not seek re-election in the 1925 vote.