Czech Republic competed at the 2020 Winter Youth Olympics in Lausanne, Switzerland from 9 to 22 January 2020.

[2] Medals awarded to participants of mixed-NOC teams are represented in italics.

Czech Republic qualified a mixed team of four athletes.

[3] Vít Chabičovský (CZE) One male figure skaters achieved quota places for Czech Republic based on the results of the 2019 World Junior Figure Skating Championships.

[4] Key: Jan Šimek Štěpánka Ptáčková Jiří Konvalinka Eliška Šibravová Mathias Vacek One female skaters achieved quota places for Czech Republic based on the results of the 2019 World Junior Short Track Speed Skating Championships.