Dominik Kolorz is a Polish trade union activist, and the chairman of the board of the Śląsko-Dąbrowski Region of Polish Solidarity.
He joined Solidarity in 1988 as an employee of the Rymer Coal Mine, and the following year he became the vice-chairman of the factory commission, and in 1991 he became its chairman. In 1996 he became the head of the Inter-Enterprise Coordinating Committee of NSZZ “Solidarność” Rybnicka Spółka Węglowa. In the years 1998-2002 he was the vice-chairman of the National Section of Coal Mining of NSZZ “Solidarność”.
In March 2011, he was elected chairman of the board of the Śląsko-Dąbrowski Region of Solidarity.