Inna is of Slavic origin, specifically from Ukraine and Russia, where it is derived from the word 'innost', meaning 'inner'. It is often considered a diminutive form of names like Inessa or Innokentii. The name gained popularity in the late 20th century, particularly in Eastern Europe.
"The name Inna has seen notable fluctuations in popularity over the past century, with its peak in recent years."