Diana is the name of the Roman goddess of the hunt, the moon, and wild nature — the Roman counterpart to the Greek Artemis. The name derives from the Proto-Indo-European root dyew, meaning "bright" or "sky," the same root that gives "day" and "divine."
It remains in continuous use across the West. Today Diana sits in the U.S. top 200.
Diana 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 Diana reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.