More info about the name "Nika"
There are several possible explanations of the name Nika. Some souces suggest it is a short form of Nikita, others mention it as a nickname for Veronika, Dominique, etc. Most likely, it is a short form of Nicole. Nicole is a feminine form of Nicholas, originating in Greek language and meaning "people's triumph, victory". It is mostly used in English and French, in English-speaking countries it has been used since the middle of the 20th century. It might be related to the Greek goddess of victory, Nike. It can be used as a surname as well.