MOSCOW (AP) _ Soviet leader Mikhail Gorbachev and President Reagan will hold a summit in Geneva, Switzerland on Nov. 19-20, the official Soviet news agency Tass announced today.

The last superpower summit was held in 1979 between then President Carter and Soviet party leader Leonid Brezhnev.

Washington officials had indicated the summit was to be held later this year, but the Tass announcement was the first official confirmation from either side.

It will be Reagan's first encounter with the new Soviet leader, who assumed power in March. There are no agreements ready for the two leaders to sign, although in the months ahead that could change, said State Department officials, who insisted on anonymity.

While the Geneva agenda will range from nuclear weapons curbs to turmoil in the Middle East and Latin America, White House officials interviewed before today's official announcement were already trying to dampen any expectations of a breakthrough.