Seina may refer to:
*, Japanese professional kickboxer
*, Japanese curler
*, Japanese rugby union and rugby sevens player
*, Japanese model and reality television contestant
See also
*
Marycha
Marycha () is a small river that serves as the natural Polish–Lithuanian and Lithuanian–Belarusian border. It starts around Puńsk, flows through the town of Sejny, passes through Pomorze Lake. It is a tributary of Czarna Hańcza
The Cza ...
(), a river on the Polish–Lithuanian and Lithuanian–Belarusian borders
{{disambiguation
Japanese feminine given names