Jan Zieliński

Jan Zieliński (born 16 November 1996) is a tennis player from Poland. Zieliński has a career-high singles ranking of No. 769, and a career-high doubles ranking of No. 7.

Playing for the Poland Davis Cup team, Zieliński has a win–loss record of 3–3.

Doubles

 * 🇺🇸 Phoenix (13 Mar 2023) – 🇺🇸 Nathaniel Lammons / 🇺🇸 Jackson Withrow def. Hugo Nys / 🇵🇱 Jan Zieliński, 6–7(1–7), 6–4, [10–8].
 * 🇮🇹 Rome (15 May 2023) – Hugo Nys / 🇵🇱 Jan Zieliński def.  Robin Haase /  Botic van de Zandschulp, 7–5, 6–1.

Grand Slam

 * Singles
 * Doubles