Wapienno [vaˈpʲɛnːɔ] is a village in the administrative district of Gmina Barcin, within Żnin County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 3 kilometres (2 mi) south-east of Barcin, 19 km (12 mi) east of Żnin, and 32 km (20 mi) south of Bydgoszcz.