Onia is a unisex given name of Slavic origin, derived from the Slavic word 'ona', which means 'she'. It is often used as a diminutive form of names like Ania, Olesya, or Oksana in Eastern European cultures. The name gained some popularity in the late 20th century and early 21st century, particularly in countries such as Poland, Russia, and Ukraine. However, it remains relatively uncommon outside these regions.
Over the span of a century, from 1913 to 2010, the name Onia was given to a total of 92 newborns. The most popular years for this name were 1917, 1920, and 1922 with 6 births each, while there was only one year in the last century where no child named Onia was born (1923-1924).