"I learned with surprise that a Russian lawyer, a woman, is being blamed and Trump's son is being blamed for meeting. For me, this is wild," Lavrov told a joint news conference with his Belgian counterpart in Brussels.
"Because when any person speaks to a lawyer, what problem or threat could there be? I didn't know about this, I learned about it from television."
The emails released by Donald Trump Jr. on Tuesday are seen by Trump critics as the most concrete evidence yet that Trump campaign officials welcomed Russian help to win the election.
But Lavrov dismissed the media interest in the email release, saying: "It's amazing that serious people are making a mountain out of a molehill."