Thomas McEwan Jr. (February 26, 1854, Paterson, New Jersey – September 11, 1926) was an American Republican Party politician who represented New Jersey's 7th congressional district in the United States House of Representatives from 1895 to 1899.

He attended the law department of Columbia Law School was admitted to the bar about 1885 and commenced practice in New York City and Jersey City, New Jersey.

He was secretary to Dr. Morgan Dix, rector of Trinity Church in New York City from 1886-1906.

He was a member of the New Jersey General Assembly in 1893 and 1894 and served as Republican leader in 1894.

After leaving Congress, he resumed the practice of law and also engaged in banking in West Hoboken, New Jersey, from 1904 until July 1, 1924, when he retired.