The London club will return to Wembley for both their Heineken Cup match against Leinster on 16 October and their Aviva Premiership clash with Wasps on Boxing day.
Saracens became the first Rugby Union outfit to host a game at the national football stadium when they took on Northampton Saints last September.
Chairman Nigel Wray said: “Saracens at Wembley has quickly become synonymous with a great family day out including great rugby and great entertainment for a great price at a great venue.
Ã¢â‚¬Å“We are delighted to take these two outstanding matches to Wembley, and we look forward to two more fantastic occasions.”
Saracens begin their campaign on 4 September against London Irish at Twickenham.
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BIOGRAPHY: Daniel Sturridge
BIOGRAPHY: Kepa Arrizabalaga