Mareček, feminine: Marečková, is a Czech surname. Notable people with the surname include:
Daniel Mareček (born 1998), Czech footballer Eva Marečková (born 1964), Slovak gymnast Jonáš Mareček (born 2001), Czech biathlete Lukáš Mareček (born 1990), Czech footballer Otakar Mareček (1943–2020), Czech rower Vlastislav Mareček (1966–2007), Czech footballer and manager