Mateusz Kowalczyk

Mateusz Kowalczyk may refer to:
 * Mateusz Kowalczyk (tennis) (born 1987), Polish tennis player who specialises in doubles
 * Mateusz Kowalczyk (footballer) (born 2004), Polish footballer
 * Mateusz Kowalczyk (figure skater)
 * Mateusz Kowalczyk (speedway rider)