Janikowo [janiˈkɔvɔ] is a village in the administrative district of Gmina Czerwińsk nad Wisłą, within Płońsk County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) north of Czerwińsk nad Wisłą, 24 km (15 mi) south of Płońsk, and 54 km (34 mi) north-west of Warsaw.