John Albert McShane (August 25, 1850 – November 10, 1923) was an American Democratic Party politician. He was the first Democrat to be elected to the United States House of Representatives from Nebraska, serving one term from 1887 to 1889.
McShane was elected to the Nebraska state house of representatives in 1880 and to the state senate in 1882, serving there until 1886, when he ran for a seat in Congress