| Date: | February 14–20 |
| Edition: | 30th (men) / 20th (women) |
| Surface: | Hard / Indoor |
| Location: | Memphis, TN, United States |
| Venue: | Racquet Club of Memphis |
| Champms: | Kenneth Carlsen |
| Champws: |  Vera Zvonareva |
| Champmd: |  Simon Aspelin /  Todd Perry |
| Champwd: |  Miho Saeki / Yuka Yoshida |
The 2005 Regions Morgan Keegan Championships and the Cellular South Cup were tennis tournaments played on indoor hard courts. It was the 30th edition of the Regions Morgan Keegan Championships, the 20th edition of the Cellular South Cup, and was part of the International Series Gold of the 2005 ATP Tour, and of the Tier III Series of the 2005 WTA Tour. Both the men's and the women's events took place at the Racquet Club of Memphis in Memphis, Tennessee, United States, from February 14 through February 20, 2005.
See main article: 2005 Regions Morgan Keegan Championships – Singles. Kenneth Carlsen defeated 
Max Mirnyi, 7–5, 7–5[1]
See main article: 2005 Cellular South Cup – Singles. Vera Zvonareva defeated 
Meghann Shaughnessy, 7–6(7–3), 6–2[2]
See main article: 2005 Regions Morgan Keegan Championships – Doubles. Simon Aspelin / Todd Perrey defeated Bob Bryan / Mike Bryan, 6–4, 6–4
See main article: 2005 Cellular South Cup – Doubles. Miho Saeki / Yuka Yoshida defeated Laura Granville / Abigail Spears 6–3, 6–4