Peter Sejna (born 5 October 1979) is a Slovak former professional ice hockey center.

Sejna was born in Liptovský Mikuláš, Czechoslovakia.^{[citation needed]} As a youth, he played in the 1993 Quebec International Pee-Wee Hockey Tournament with a team from Poprad. Sejna attended Colorado College, and in 2003 won the coveted Hobey Baker Award, given annually to the most outstanding collegiate hockey player.^{[citation needed]} Sejna also won the bronze medal with the Slovak national ice hockey team in the 2003 Ice Hockey World Championship.^{[citation needed]}