Joseph Atkins Baker (November 7, 1883 – March 15, 1959) was a Democratic member of the Mississippi State Senate, representing Mississippi's 12th senatorial district, from 1916 to 1920.

Joseph Atkins Baker was born on November 7, 1883, in Sharon, Madison County, Mississippi.

[1] He was the son of William Jackson Baker and Almyra Atkins.

[1] He moved to Jackson, Mississippi, in 1910 and began practicing law there.

[1] Baker served in the U. S. Army in World War I as a First Lieutenant.