Robert G. Smith (1854–1923) was an Irish-born American Brevet Brigadier General of the Spanish–American War.

[1] Upon the outbreak of the Spanish–American War, Smith enrolled to become the Colonel of the 4th New Jersey Volunteer Infantry Regiment under Adjutant General William Scudder Stryker on June 30, 1898.

[2] After the war, Smith would continue to serve in the New Jersey National Guard as a colonel until his retirement on May 17, 1906, with the rank of Brevet Brigadier General.

[4][5] During the nomination of his Brigadier General status by the New Jersey Legislature, Smith moved to Washington, D.C., to secure his position.

While serving as the marine superintendent of the Cunard S.S. Lines, he died at Sayville on December 5, 1923, and was buried at the Bayview – New York Bay Cemetery.