White will lead an international team of officials appointed to the game - Scotsmen Andy Macpherson and David Changleng will be his assistant referees.
To ensure impartiality, two Munster Branch appointees, Leo Colgan and Dermot Moloney, will act as 4th and 5th officials respectively. Scotland's Jim Yuille completes the match official group as the television match official.
The Guinness Premiership's most experienced referee, White has clocked up 179 games in charge since making his debut in England's top flight in October 1994.
He will be familiar with the concept of a grand final, having taken charge of two Premiership finals in 2004 and 2005.
He has more than 50 Heineken Cup matches to his name, including three finals - the all-French affairs of 2003 and 2005, and Munster's victory over Biarritz Olympique at the Millennium Stadium in 2006 - and also officiated at the Rugby World Cup semi-final in 2003.
MAGNERS LEAGUE GRAND FINAL - MATCH OFFICIAL APPOINTMENTS:
Saturday, May 29 -
LEINSTER v OSPREYS, the RDS, 6.30pm (live Setanta Sports Ireland/S4C)
Referee: Chris White (England)
Assistant Referees: Andy Macpherson, David Changleng (both Scotland)
4th Official: Leo Colgan (Ireland); 5th Official: Dermot Moloney (Ireland)
Television Match Official: Jim Yuille (Scotland)