Danijil Leonyidovics Szemko (Ukrainian: Даниїл Леонідович Семко; born 17 May 2000) is a Hungarian ice dancer.

[1] In 2021, he graduated from the National University of Ukraine on Physical Education and Sport and received the specialty of a coach in figure skating.

He plays the guitar and harmonica, writes songs, and performs in musical groups of Budapest.

He previously competed with Yana Bardadym and Vera Gorodetskaia for his native Ukraine.

Marton/Szemko made their international debut on the Junior Grand Prix series, finishing fifteenth in Latvia and eleventh in Croatia.

At the 2016 Four National Championships, Marton/Szemko finished fifth overall and won the Hungarian junior silver medal behind Kimberly Wei and Illias Fourati.

As a result, they were assigned to the 2016 World Junior Championships, where they finished twenty-third and did not qualify for the free dance.

[3] Marton/Szemko recovered to win their first international medal at the 2017 Jégvirág Cup, earning silver behind Ukraine's Popova/Byelikov and ahead of Damulevičiūtė/Kizala of Lithuania.

At the World Junior Championships, they were fifteenth in the short dance and twelfth in the free to finish fourteenth overall.

[4] In January 2021, coach Nóra Hoffmann announced Szemko's partnership with Russian Mariia Ignateva to compete for Hungary.