Menšík (feminine: Menšíková) is a Czech and Slovak surname. It is sometimes Germanized as Menschick or Menschik. Notable people with the surname include:
- Eric Mensik (born 1987), American football player
- Jakub Menšík (born 2005), Czech tennis player
- Pavel Menšík (born 1968), Czech rower
- Vladimír Menšík (1929–1988), Czech actor
- Wolfram Menschick (1937–2010), German church musician