Around the world, Treinis (Treinis , Трейнис ) is an extremely rare unknown gender first name. Much more frequently, Treinis is the last name as well as the forename.
Треинис, and Трейніс
Mr, Michael, Daniel, Andrew, Stacie, Sergey, Matiss, Marcia, Marina, Stephen, Oxana, Julie, Janis, Dasha, David, Pavel, Andis, Alice, Toby, Erica, and Jennifer
, Трейнис 
) is an extremely rare unknown gender first name. Much more frequently, Treinis is the last name as well as the forename.