The name is derived from the Polish personal name Kaczmarz ~ Karczmarz (derived from the common noun kaczmarz ~ karczmarz meaning ‘tavern keeper’) with the patronymic suffix -czyk and refers to the connection with the father or another ancestor by that name. Alternatively, it may also be derived from the personal name Kaczmarek with the patronymic suffix -yk and refer to the connection with the father or another ancestor by that name. Variant: Karczmarczyk.