Turnberry will host the fifth and final major of the Champions Tour season from July 26-29. Russ Cochran will defend the title he won last year at Walton Heath.
The 52-year-old Presidents Cup captain last competed in the British Open in 2006, missing the cut at Hoylake. The year prior, he finished T-3 at St. Andrews.
Couples is defending champion this week at another major, the Constellation Senior Players Championship, at Fox Chapel GC in Pittsburgh.