Teo Susnjak (born 23 July 1977) is a New Zealand academic and former professional tennis player.

[1] He is a senior lecturer in computer science at Massey University.

Susnjak, a Croatian-born player, was an Australian Open junior quarter-finalist.

Ranked as high as 362 in the world, he had a win over Lleyton Hewitt at the 1997 Perth Challenger and made an ATP Tour main draw appearance at the 1998 Heineken Open in Auckland.

[2] He represented the New Zealand Davis Cup team in a 1998 tie against Japan in Miyazaki, where he featured in two singles rubbers.