Antoni Kowalski (born 9 February 2004) is a Polish professional snooker player. He has earned a two-year card on the World Snooker Tour from the 2024–25 snooker season.
In 2019, he won the World Open Under-16 Snooker Championships, defeating Hungarian Bulcsú Révész 4–2 in the final. He became the first Polish player to win the title.
In 2022, Kowalski was runner up to Liam Davies in the Under-18 and Under-21 categories at the IBSF World Snooker Championship.
In January 2023, Kowalski defeated Mateusz Baranowski 5-2 in the final of the Polish Championship in Lublin. It was his second Polish national championship, having also won the title in 2021.
In November 2023, Kowalski secured the biggest title of his career as he defeated Rory McLeod 5-3 in the final to win the Landywood Q Tour title.
In January 2024, he defeated Baranowski in the final of the Polish national championship again, for his third national title. In March 2024, he reached the final of the EBSA European Under-21 Snooker Championships where he lost to Liam Davies.
He entered Q School in May 2024 and in the second event he progressed to the latter stages with wins over Jed Mann, and former professional James Cahill. In the final round he faced Englishman Simon Blackwell and triumphed 4-1 to earn an assured two-year card on the World Snooker Tour.
He began his pro career at the 2024 Championship League in Leicester in June 2024 with his results including a 2-2 draw with World Championship finalist Jak Jones in his round robin group. He reached the third round of the 2024 Saudi Arabia Snooker Masters with a 4-0 win over He Guoqiang. He defeated Hammad Miah at the 2024 Northern Ireland Open in September 2024. In December 2024, he reached the last-16 of the 2024 Snooker Shoot Out. That month, he reached the last-64 of the 2025 German Masters with a 5-0 win over Martin O'Donnell, and the last-64 of the 2025 World Open.