James O'Connor (April 4, 1870 – January 7, 1941) was an American politician who served in the United States House of Representatives from Louisiana's 1st congressional district for six terms as a Democrat.

O'Connor was born in New Orleans, Louisiana on April 4, 1870, and went to law school at Tulane University, graduating in 1900.

He was a member of the Louisiana House of Representatives from 1900 to 1912 and as assistant city attorney of Orleans Parish from 1918 until 1919, when on June 15, he was elected as a Democrat to the 66th congress of the U.S. House of Representatives.

He lost reelection to Joachim O. Fernández in 1930 and his term ended March 3, 1931.

He resumed his law practice and died in Covington, Louisiana on January 7, 1941.