Ján Koristek

{{Short description|Slovakian cross-country skier (born 1996)}}

{{Infobox sportsperson

| name = Ján Koristek

| image = 20190227 FIS NWSC Seefeld Men CC 15km Jan Koristek 850 4056.jpg

| caption = Koristek in 2019

| birth_date = {{birth date and age|1996|07|11|df=y}}

| birth_place = Zvolen, Slovakia

| country = {{SVK}}

| sport = Cross-country skiing

| height = 178 cm

| weight = 75 kg

}}

Ján Koristek (born 11 July 1996) is a Slovakian cross-country skier who competes internationally.

He represented his country at the 2022 Winter Olympics.{{cite web |url=https://olympics.com/beijing-2022/olympic-games/en/results/cross-country-skiing/athlete-profile-n1053045-jan-koristek.htm |title=Jan KORISTEK |work=Beijing 2022 Olympics |access-date=2022-02-06 |archive-date=2022-02-06 |archive-url=https://web.archive.org/web/20220206202000/https://olympics.com/beijing-2022/olympic-games/en/results/cross-country-skiing/athlete-profile-n1053045-jan-koristek.htm |url-status=dead }}