Tanvi (तन्वी) is a Sanskrit word meaning "beautiful," "slender," or "delicate." Used widely in modern India as a feminine name.
Tanvi Azmi (born 1960), the Indian actress, is a contemporary bearer.
Tanvi 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.
In Pythagorean numerology the letters of Tanvi reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.