Mickelson has won the event four times, most recently in 2012. He skipped the event this past year for the first time since 1994 because it conflicted with his children's school break, but tournament officials announced Tuesday that the 45-year-old will be returning to the Monterey Peninsula in February.
Mickelson is still in search of his first victory since the 2013 Open Championship, but he remains a fan favorite at events, particularly in his native California. In addition to his 2012 triumph, Mickelson also won at Pebble Beach in 1998, 2005 and 2007.
His inclusion also further indicates that the event's field, which in recent years has been one of the weakest on the West Coast swing, will be significantly strengthened in 2016. The tournament had previously announced commitments from four of the current OWGR top 10: world No. 1 Jordan Spieth, No. 2 Jason Day, No. 4 Bubba Watson and No. 8 Dustin Johnson, who won the event in 2009 and 2010.
The AT&T Pebble Beach Pro-Am will be held Feb. 11-14 in Pebble Beach, Calif.