| 2009 Regions Morgan Keegan Championships and Cellular South Cup | |
|---|---|
| Date | February 15–22 |
| Edition | 34th (Men) / 24th (Women) |
| Category | ATP World Tour 500 (men) WTA International (woman) |
| Surface | Hard |
| Location | Memphis, Tennessee, US |
| Venue | Racquet Club of Memphis |
| Champions | |
| Men's singles | |
 Andy Roddick | |
| Women's singles | |
 Victoria Azarenka | |
| Men's doubles | |
Mardy Fish /  Mark Knowles | |
| Women's doubles | |
Victoria Azarenka /  Caroline Wozniacki | |
The 2009 Regions Morgan Keegan Championships and the Cellular South Cup was an ATP World Tour and WTA Tour tennis tournament held at the hardcourts of the Racquet Club of Memphis in Memphis, Tennessee in the United States. It was the 34th edition of the Regions Morgan Keegan Championships and the 24th edition of the Cellular South Cup. The Regions Morgan Keegan Championships was part of the ATP World Tour 500 series on the 2009 ATP World Tour, and the Cellular South Cup was an International-level tournament on the 2009 WTA Tour. Both of the events took place from February 15 to February 22, 2009.
The men's draw was led by Australian Open & San Jose semifinalist plus 2002 champion Andy Roddick, Auckland champion Juan Martín del Potro, San Jose semifinalist plus 2002 runner-up James Blake, Auckland semifinalist and 2006 and 2008 runner-up Robin Söderling, Brisbane titlist Radek Štěpánek, Igor Andreev, Mardy Fish and Auckland runner-up Sam Querrey.
The women's draw was headed by WTA #12 Caroline Wozniacki, Brisbane winner Victoria Azarenka, Lucie Šafářová, Auckland semifinalist Anne Keothavong, Marina Erakovic, Sabine Lisicki, Alla Kudryavtseva and Pauline Parmentier.