Anya is the Russian and Slavic diminutive of Anna — itself from the Hebrew Channah, meaning "grace" or "favour." In Russian and Ukrainian families, Anya is one of the most common affectionate forms of Anna, used widely both for children and adults.
Anya has appeared in the U.S. top 1000 since 2003 and has been rising. Today it sits comfortably in the U.S. top 400.
Anya 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 Anya reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.