The 2011 Regions Morgan Keegan Championships and the Cellular South Cup was an ATP World Tour and WTA Tour event held at the hardcourts of the Racquet Club of Memphis in Memphis, Tennessee in the United States.

It was the 35th edition of the Regions Morgan Keegan Championships and the 26th edition of the Cellular South Cup.

The Regions Morgan Keegan Championships was part of the ATP World Tour 500 series on the 2011 ATP World Tour, and the Cellular South Cup was an International-level tournament on the 2011 WTA Tour.

The following players received wildcards into the main draw: The following players received entry from the qualifying draw: The following player received the Lucky loser spot: The following players received wildcards into the main draw: The following player received entry as an alternate: The following players received entry from the qualifying draw: Andy Roddick defeated Milos Raonic, 7–6(8–6), 6–7(11–13), 7–5 Magdaléna Rybáriková defeated Rebecca Marino, 6–2, ret.

Max Mirnyi / Daniel Nestor defeated Eric Butorac / Jean-Julien Rojer, 6–2, 6–7(6–8), [10–3] Olga Govortsova / Alla Kudryavtseva defeated Andrea Hlaváčková / Lucie Hradecká, 6–3, 4–6, [10–8]