Tatjana Ječmenica (Serbian Cyrillic: Татјана Јечменица; born July 4, 1978 in Novi Sad, Vojvodina, SR Serbia, SFR Yugoslavia) is a former professional tennis player from Serbia. During her career she also played for FR Yugoslavia and Serbia and Montenegro; she was also captain of Serbian Fed Cup team in 2005 and 2006. She is currently a tennis coach and running a tennis school "Ječmenica" in her home town of Novi Sad.
Her tennis career high was No. 72 on June 24, 1996 and No. 88 on July 29, 1996 on WTA rankings. She also won six tournaments in singles and four in doubles on the ITF Circuit. At Grand Slams her best result was reaching the second round at the French Open in 1996 and at the US Open in 1995.