| Wade O. Martin Jr. | |
| Birth Name: | Wade Omer Martin Jr. |
| Birth Date: | 18 April 1911 |
| Birth Place: | Arnaudville, Louisiana, U.S. |
| Office1: | 33rd Secretary of State of Louisiana |
| Governor1: | Jimmie Davis Earl Long Robert F. Kennon John McKeithen Edwin Edwards |
| Term Start1: | 1944 |
| Term End1: | 1976 |
| Preceded1: | Jack Gremillion |
| Succeeded1: | Paul Hardy |
| Party: | Democratic |
| Alma Mater: | Southwestern Louisiana Institute Louisiana State University |
Wade Omer Martin Jr. (April 18, 1911 – August 6, 1990), also known as W. O. Martin Jr., was an American politician. He served as secretary of state of Louisiana from 1944 to 1976.
Martin was born in Arnaudville, Louisiana. He attended Southwestern Louisiana Institute and Louisiana State University.
Martin served as secretary of state of Louisiana from 1944 to 1976.
Martin died[1] on August 6, 1990, at the age of 79.
In 2001, Martin was posthumously inducted into the Louisiana Political Museum and Hall of Fame.[2]