With 168178 bearers, Svetlana is the 10th most common feminine given name in Kazakhstan (2014 Data). With 9661 bearers, Svetlana is the 4th most common feminine given name in Estonia (2014 Data).Source: https://forebears.io/forenames/svetlana
This is a VERY popular name in Russia - like the equivilant to Brittany here in America. A pet form is Svety. It isn't so well-thought of in most other places because people think it sounds harsh, and Svety reminds them of Sweaty. I LOVE it though! It's so pretty! :D.
Source: https://forebears.io/forenames/svetlana