The Palace boss is an alumnus of the university, having graduated from Avery Hill College in 1972 with a Cert ED.
"I am delighted to have been selected to receive an honorary doctorate from the University of Greenwich," Roy said.
"I spent two valuable and enjoyable years at Avery Hill studying for my teaching certificate in Physical Education. The lessons learned during that period have been of undoubted benefit during the long football coaching career which has followed."
Roy was joined by fellow teacher training graduates, who also qualified from the college in the period up to 1986.
College alumnus, Alan Morland, met his wife Vivien when they both studied at Avery Hill. He said: "We would like to thank the University of Greenwich for providing this wonderful opportunity to recognise the tremendous contribution that thousands of Avery Hill College trained teachers have made to education."
Roy's place in Crystal Palace history was secured in 2018 when they became the first team to stay up after losing their first seven Premier League games.
The former England manager's coaching career began in 1976 at Swedish side Halmstad, where Roy won two league titles. Spells at Bristol City and Oddevold followed before Roy took Malmo to five straight league championships.
After a spell at Neuchâtel Xamax he took over as Switzerland national team manager, qualifying for the 1994 World Cup and Euro 96 finals.
After managing Inter Milan and leading them to a UEFA Cup Final, Roy worked at Blackburn Rovers where he took the team to a European placed finish, then on the continent again before taking over at Fulham in 2007, guiding them to their highest finish of seventh in the Premier League and the Europa League final. He was also named LMA manager of the year in 2010.
After spells at Liverpool and West Bromwich Albion, Roy took the England job. During this spell England were ranked third in the world.
Pictures:
Master of ceremonies Chris Philpott with Roy Hodgson and Students' Union officer Jono Smith
Graduates from Avery Hill College
