Dominika is the Polish/Slovak feminine form of Dominic — from the Latin dominicus (of the Lord, belonging to God). Dominika Egorova-Smetkina — modern Russian-American figure. Saint Dominika of Tropea — Italian medieval saint. Princess Dominika — Polish royal heritage naming.
Dominika is a compound name. Its parts are níkē — each an attested element with a recorded meaning of its own.
Dominika 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 Dominika reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.