Tjaša Jezernik (born 17 June 1977 in Celje[1]) is a Slovenian retired tennis player.

Jezernik won one singles and three doubles titles on the ITF tour in her career.

On 4 December 1995, she reached her best singles ranking of world number 416.

Jezernik made a total of seven appearances for Slovenia in Fed Cup competition.

This biographical article relating to Slovenian tennis is a stub.