Kołaczkowo [kɔwat͡ʂˈkɔvɔ] is a village in the administrative district of Gmina Witkowo, within Gniezno County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 2 kilometres (1 mi) north of Witkowo, 15 km (9 mi) south-east of Gniezno, and 58 km (36 mi) east of the regional capital Poznań.

During the German occupation (World War II), in December 1939, the Germans expelled many Polish families from Kołaczkowo to the so-called General Government, and their houses were handed over to German colonists as part of the Heim ins Reich policy.

There is a historic manor house in Kołaczkowo with an adjacent park and an old distillery.