Marušiak (Slovak feminine: Marušiaková) and Marusiak are surnames which may refer to:
- Juraj Marušiak (born 1970), Slovak political scientist
- Marek Marušiak (born 1990), Slovak ice hockey player
- Yevhen Marusiak (born 2000), Ukrainian ski jumper
Marušiak (Slovak feminine: Marušiaková) and Marusiak are surnames which may refer to: