The two former world champions have been drawn in different halves for one-day cricket's showpiece that is to be played in Australia and New Zealand in February and March.
Pakistan, the 1992 champions, will look to bounce back after an embarrassing 2-0 whitewash for Misbah-ul Haq's tourists in the short Test series that concluded on Monday.
Sri Lanka, who won the World Cup four years later in 1996, hope to build on a successful run by Angelo Mathews' team in limited-overs cricket this year when they won the one-day Asia Cup and the World Twenty20.
"The one-dayers will be different and Pakistan will come hard at us. They are a good side and we have to be at the top of our game."
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Mahela Jayawardene, who retired this week from Test cricket to concentrate on his World Cup preparations, and fellow veteran Kumar Sangakkara lead a strong batting line-up that also includes opener Tillakaratne Dlshan.
Sri Lanka will miss off-spinner Sachithra Senenayake, who is undergoing remedial work on his bowling action after being reported by umpires on the England tour in June.