Deni Kozul (born 18 March 1997) is a Slovenian table tennis player.
He represented his country at the Summer Olympics in 2021 (team) and 2024 (singles and team), the European Games in 2019 (team) and 2023 (singles, team and mixed doubles), and the Mediterranean Games in 2018 (singles and team) and 2022 (singles and team).
Kozul competed at the World Championships in 2017 (doubles), 2018 (team), 2019 (singles), 2021 (singles and doubles), 2022 (team), 2023 (singles) and 2024 (team).
He also competed at the European Championships in 2017 (team), 2019 (team), 2021 (team), 2022 (singles and mixed doubles) and 2024 (singles).