Australian O'Connor, who has been head coach of Leicester since 2010, will begin a three-year deal at the Irish provincial side in July when New Zealander Schmidt steps down, Leinster said in a statement.
Leinster failed in their attempt to win the Heineken Cup for a record third successive year this season, but have reached the second tier Amlin Cup final against Stade Francais on May 17.
O'Connor led Leicester to the Heineken Cup quarter-finals this season and they play Harlequins in the English Premiership semi-finals next week.
- Sports & Recreation
- Heineken Cup