"It is important for all participants to express articulate support for the Russian-US initiative to implement the Geneva communique," Lavrov was quoted as saying in the Swedish town of Kiruna by Russian news agencies.
Syria's key National Coalition opposition group is scheduled to meet in Istanbul on May 23 to discuss a Russia-US proposal for an international conference on a political solution to the Syrian conflict.
The meeting was proposed by Lavrov and US Secretary of State John Kerry earlier this month and will aim to build on an agreement reached by world powers last June in Geneva.
Lavrov, who is in Sweden for a meeting of the Arctic Council, a grouping of countries with Arctic territory, discussed the holding of the peace conference with Kerry on yesterday.
Kerry said both he and Lavrov believed that the conference could indeed be organised in accordance with plans.
"We discussed the challenge of Syria," he said. "We are very optimistic that it can be done.