The 2017 European Athletics U23 Championships were the 11th edition of the biennial athletics competition between European athletes under the age of twenty-three. It was held in Bydgoszcz, Poland from 13 to 16 July. This was the second time that the competition was hosted by Bydgoszcz after the 2003 edition.

Michał Rozmys is a Polish middle-distance runner. He represented his country in the 800 metres at the 2017 World Championships. In addition, he won a bronze medal in the 1500 metres at the 2017 European U23 Championships and a gold at the 2019 Summer Universiade.