Ondrej Rusnák (born 25 February 1989, in Bratislava) is a Slovak retired professional ice hockey player.
He is currently working as an assistant coach for ASC Corona Bra?ov of the Erste Liga.
Rusnák played in the Tipsport Liga for HC Slovan Bratislava, HC Dukla Trencín, MsHK Žilina and HK Poprad.
He is a son of former Czechoslovak international Dárius Rusnák.