Vanya has dual origins. In Sanskrit (वन्या), it means "forest" or "of the forest." In Russian (Ваня), it's the diminutive of Ivan (John), used for both genders.
Vanya is rising as a unisex name in the U.S. Uncle Vanya is the famous Chekhov play.
Vanya does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
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In Pythagorean numerology the letters of Vanya reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.