The name is derived from the name Miko (hypocoristic form of the Slovak given name Mikuláš ‘Nicholas’). It may also be derived from the medieval Hungarian given name Mikó (hypocoristic form of the given names Miklós ‘Nicholas’ or Mihály ‘Michael’; spelling adaptation). In both cases, it refers to the connection with the father or another ancestor by that name. Variant: Mikó.