Dmytro Alexandrovich Zavadsky is a Ukrainian badminton player. He competed for Ukraine at the 2012 Summer Olympics.

Kalle Koljonen is a Finnish badminton player. In 2014, he won a bronze medal at the European Men's Team Championships in Basel. He won his first international title at the 2015 Hungarian International. Koljonen became first ever badminton player from his country to medal at the European Championships in 2021.