Karina is the Scandinavian and Slavic form of Catherine — from the Greek Aikaterine / katharos ("pure"). Martinez (2011). Karina Vetrano — American track athlete. Karina Bacchi — Brazilian TV personality. Karina in Spanish-speaking countries is a top-100 girls' name in Mexico, Argentina, and Brazil; in Russian/Polish/Ukrainian families it's been one of the top-50 names since the 1980s. Karina Garcia — American YouTuber.
Karina 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 Karina reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.