"Variant of Olivia"
The name Oliwia is commonly a female name from the "Swedish" origin.
Oliwia is the Polish form of Olivia, spelled according to Polish convention, in which the letter w stands for the v sound. It corresponds element for element to Olivia and carries the same derivation, from the Latin oliva, meaning olive. The spelling is standard in Polish given-name usage rather than an English-language invention.
Olivia means "Holy".
The pronunciation of Oliwia is oh-LEE-vee-uh.