Wojnówko is a settlement in the administrative district of Gmina Murowana Goślina, within Poznań County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 2 km north of the village of Wojnowo, 9 km north-east of Murowana Goślina, and 29 km north of the regional capital Poznań. It lies on the banks of a small lake, Lake Łomno, and close to forest areas. The settlement consists largely of a complex of vacation properties. It has a small permanent population of about 26. It belongs to the sołectwo of Wojnowo. (The name Wojnówko is a diminutive of Wojnowo.)