Petr Nouza (born 9 September 1998) is a Czech professional tennis player. He has a career high ATP doubles ranking of world No. 69 achieved on 5 May 2025. Nouza has won one ATP Tour and 10 ATP Challenger doubles titles. He also has a career high singles ranking of No. 536 achieved on 5 August 2019.
He won his maiden Challenger at the 2023 Oeiras Indoors with Victor Vlad Cornea.
He made his Grand Slam debuts in doubles at the 2024 Australian Open with Jiří Lehečka and at the 2024 French Open as an alternate pair with Luis David Martínez.
Partnering with Patrik Rikl, Nouza was runner-up in the doubles at the 2024 Stockholm Open, losing to top seeds Harri Heliövaara and Henry Patten in the final.
At the 2025 Grand Prix Hassan II Nouza and Rikl defeated top seeds Hugo Nys and Édouard Roger-Vasselin in the final in straight sets to win their maiden ATP Tour title.