McIlroy has three top-10 finishes in his last four starts, including a tie for eighth earlier this month at the Masters. Despite a return to form, he slipped outside of the top 10 in the world rankings this week for the first time since January 2011.
McIlroy finished fifth in his debut at Wentworth Club in 2009, but has struggled to match that result in recent years. His best finish since then was a tie for 24th in 2011, while the Ulsterman has missed the cut each of the last two years.
"The BMW PGA Championship is always one of the highlights of the year and it is a title we are all keen to win,” McIlroy said as part of a media release. "I’ve been a little hit and miss at Wentworth in recent years, but I think this year my game is in much better shape going into the tournament, so I’m feeling confident about my chances of performing well there."
McIlroy is scheduled to play in the U.S. each of the next two weeks, first at the Wells Fargo Championship and then at The Players Championship next week, before heading to England for the BMW, which will take place May 22-25.
Matteo Manassero will defend his title next month against a field that, in addition to McIlroy, boasts reigning U.S. Open champ Justin Rose, FedEx Cup and Race to Dubai winner Henrik Stenson, former world No. 1s Lee Westwood and Luke Donald as well as Ryder Cup stalwarts Ian Poulter and Sergio Garcia.