Wiktor Zieliński (born 11 January 2001) is a Polish professional pool player.

[1] Zielinski began playing pool at aged 8 in 2009, and in 2013 entered his first competition, the Junior European championships.

[4] He won the junior straight pool championship again in 2017, whilst also finishing runner-up at the 9-ball and 8-ball events as well.

[5] In 2017, aged 16, he became the youngest player to win an event on the Euro Tour, when he won the 2017 Treviso Open.

[10] At the 2017 WPA World Nine-ball Championship, Zielinski lost his initial match to Cheng Yu-hsuan before winning his final match of the double elimination round against Mario He 9–8, to reach the knockout round.