Konstantina is the Greek feminine of Constantine — "steadfast." Konstantina (Dina) Goula Smyrli is the Greek long-distance runner. The name honors Saint Constantine the Great's mother Helena and his religious legacy.
Used widely in modern Greece.
Konstantina 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 Konstantina reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.