Siemkowo [ɕɛmˈkɔvɔ] is a village in the administrative district of Gmina Lniano, within Świecie County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 6 kilometres (4 mi) south of Lniano, 16 km (10 mi) north-west of Świecie, and 44 km (27 mi) north of Bydgoszcz.