| Date: | March 24–30 |
| Edition: | 3rd |
| Category: | USLTA Indoor circuit |
| Prize Money: | $35,000 |
| Draw: | 16S / 8D |
| Surface: | Carpet / indoor |
| Location: | Jackson, Mississippi, U.S. |
| Venue: | Mississippi Coliseum |
| Champs: |  Ken Rosewall[1] |
| Champd: | Ken Rosewall / Fred Stolle[2] |
| Before Name: | Mississippi Indoors |
| Main Name: | Tennis South Invitational |
The 1975 Tennis South Invitational was a men's tennis tournament played on indoor carpet courts at the Mississippi Coliseum in Jackson, Mississippi in the United States that was part of the 1975 USLTA-IPA Indoor Circuit. It was the third edition of the tournament and was held from March 24 through March 30, 1975. Second-seeded Ken Rosewall won the singles title and earned $10,000 first-prize money after defeating unseeded Butch Buchholz in the final.[3]
Ken Rosewall defeated 
Butch Buchholz 7–5, 4–6, 7–6(7–3)
Ken Rosewall / Fred Stolle defeated Billy Martin / John Newcombe 6–4, 2–6, 6–1