Sejna

Sejna or Šejna may refer to:


 * Jan Šejna (1927–1997), Czech-Czechoslovak general who defected to the US in 1968
 * Karel Šejna (1896–1982), Czech conductor
 * Marco Sejna (born 1972), German footballer
 * Peter Sejna (born 1979), Slovak ice hockey player
 * 21985 Šejna, a main belt asteroid
 * Sejny, a town in Poland