Petr Fuksa Jr. (born 9 August 1998) is a Czech canoeist. He competed in the men's C-1 1000 metres and men's C-2 1000 metres events at 2020 Summer Olympics.
Fuksa and his brother Martin first began competing together as C-2 canoeists in 2017 at the Canoe Sprint World Cup. Fuksa and his brother represented the Czech Republic at the 2019 European Games in the men's C-2 1000 metres event and finished in sixth place with a time of 3:46.072.
Fuksa represented the Czech Republic at the 2020 Summer Olympics in the men's C-2 1000 metres event with his brother Martin, and in the men's C-1 1000 metres event.
Fuksa is the son of former canoeist Petr Fuksa and the brother of Martin Fuksa.