Published Thursday, 26 January 2012
The golf and music stars will receive the doctorates during summer and winter graduation ceremonies this year.
McIlroy became the youngest winner of the US tournament for almost 90 years when he clinched his maiden title at Congressional last summer.
He will be awarded a Doctor of Science degree for his contribution to the sport.
The university said: "Rory McIlroy has quickly established himself as a major force in international golf as a Major winner and Ryder Cup hero."
It follows presentations for compatriots Graeme McDowell and Darren Clarke in 2011 and 2002, respectively.
Meanwhile Lightbody - whose band has won worldwide accolades for hits including Chasing Cars and Run - will receive a degree of Doctor of Letters for his services to the music industry.
Snow Patrol performed a gig in front of thousands in Belfast city centre last year, which was streamed live for the MTV Europe Music Awards.
Their song Just Say Yes was used as the theme tune for Londonderry's successful campaign to become UK City of Culture in 2013.
Other recipients of awards are Manchester United football manager Sir Alex Ferguson, actor Sir Ian McKellen, and Former Belfast Telegraph editor Ed Curran - who will be made a Doctor of Letters in recognition of his services to journalism.
© UTV News