Simon Sloncik is a 19-year-old professional football player from CZE. He currently plays for Slavia Praha B, wearing the number 21 shirt. At the international level, he represents Czechia Republic U17. He plays primarily as a Defender. His current market value is estimated at 600K €.

His most recent move was a from SK Slavia Prague U19 to Slavia Praha B on 2024-07-01.

Throughout the Chance Národní Liga 2025-2026, Simon Sloncik featured in 14 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.