Luxembourg's U.N. Ambassador Sylvie Lucas, the current council president, announced that the U.N.'s most powerful body would meet at 3:30 p.m. EST (2030 GMT) on Monday.
It will be the third meeting of the Security Council since Friday, when Russia planes and troops started taking over the Crimea.
The council meetings on Friday and Saturday were partly open. Monday's public meeting will give the 15 council members, and possibly the broader U.N. membership, an opportunity to speak.
Russia, which has veto power, would almost certainly block any council action condemning its intervention. But the public meeting will allow countries representing all areas of the world to express their views on the Ukraine crisis.