| State House: | Mississippi |
| District: | Chickasaw County |
| Term: | January 3, 1916 – February 4, 1925 |
| Birth Date: | 23 August 1852 |
| Birth Place: | Troy, Mississippi |
| Death Place: | Chickasaw County, Mississippi |
| Party: | Democrat |
| Spouse: | Mary Jane Laughlin (m. 1882) |
| Children: | 8 |
Irvin Valentine Abernathy (August 23, 1852 – February 4, 1925) was a Democratic member of the Mississippi House of Representatives, representing Chickasaw County, from 1916 until his death.
Irvin Valentine Abernathy was born on August 23, 1852, in Troy, Mississippi.[1] [2] His parents were Marion Abernathy and Martha (Wilson) Abernathy. He married Mary Jane Laughlin in 1882.[3] Before becoming a member of the Mississippi House of Representatives, he was a member of the Board of Supervisors of Chickasaw County, and was a public cotton weigher for 10 years. He was elected to the Mississippi House of Representatives, representing Chickasaw County as a Democrat, in November 1915, for the 1916–1920 term. He was re-elected in November 1919. He was re-elected once more in November 1923.[4] However, he died before finishing his term, on February 4, 1925, in Chickasaw County, Mississippi. He was buried in the IOOF cemetery there.