McIlroy was chosen unanimously as the Race to Dubai European Tour Golfer of the Year, following a season in which he won four times, including two majors.
The Ulsterman was beaten out for the BBC's Sports Person of the Year award earlier this week, but he was a clear choice for the European Tour's top honor after being named its Golfer of the Month in May, July and August.
McIlroy's major triumphs came at the Open Championship and PGA Championship, but he also won the WGC-Bridgestone Invitational and sparked his torrid summer with a Sunday rally to win the BMW PGA Championship, the European Tour's flagship event. He cruised to victory over Henrik Stenson in the season-long Race to Dubai, and became the first player to top both the PGA Tour and European Tour money lists in the same year on two different occasions.
"To be named the European Tour’s Golfer of the Year for a second time is a huge honour and one I am extremely proud of," McIlroy said in a statement. "If I had won any one of those four titles it would have been a good year, but to win all four, to win the Race to Dubai, and to be part of another fantastic European victory in the Ryder Cup, means it is a great one."
At 25, McIlroy is the youngest two-time recipient of the award, having also been named in 2012 by the panel of media members from television, radio and the Association of Golf Writers.