Click the Audio & Subtitles icon (speech bubble) at the bottom of the player and select Čeština .
Netflix provides official Czech subtitles for all three seasons. Dark (2017) Czech subtitles
Look for versions uploaded by "Hlawoun" or "unchained," who are known for high-quality translations of this series. SerialZone.cz A great community hub for TV shows. Click the Audio & Subtitles icon (speech bubble)