Marek is the Polish, Czech and Slovak form of Mark, from the Latin Marcus, a name probably derived from Mars, the Roman god of war, and so explained as "dedicated to Mars" or "warlike". It is one of the most common names in Poland and the Czech Republic and came to America with immigrants from both countries. In the United States Marek ranked number 2605 in 2000, peaked at number 1224 in 2010 and stood at number 2629 in 2025 with 50 boys.