Valentina is the feminine of Valentino — from the Latin valens, meaning "strong" or "healthy." Saint Valentine of Rome (3rd century), whose feast day is February 14, gave the name its romantic association.
Valentina is among the most popular girl's names across Latin America, Italy, Spain, and Eastern Europe. In the U.S. The Russian cosmonaut Valentina Tereshkova (born 1937) was the first woman in space.
Valentina 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 Valentina reduce to 8, The Visionary. This is a traditional interpretive system, not a factual claim about the name.