Kaj Linna (born 24 January 1971) is a Finnish former professional ice hockey defenseman who was a two-time All-American for Boston University[1] and won a Liiga championship in 1998.

He received a scholarship to Boston University in 1991 and was part of the increased influx of European players into college hockey following the collapse of the Soviet Union.

Linna was a top defenseman for the Terriers almost from the start, being named an All-American as a sophomore and helping BU reach the first of five consecutive Frozen Fours.

[2] While his offensive production dipped as a junior, he picked up the pace in the postseason and got the Terriers to make an appearance in the championship game.

For his final season with BU, Linna's offense returned to normal and he was named to the All-American squad for a second time.