Ioan al IV-lea Potcoavă (or Ivan Pidkova – Іван Підкова in Ukrainian; also known as Ioan Sarpega, Ioan Creţul, and allegedly baptized as Nicoară Potcoavă; died June 16, 1578) was a prominent Cossack ataman, and Voivode (Prince) of Moldavia (November – December 1577).
Ioan Sturdza | Alexandru Ioan Cuza | Ioan Sabău | Mihai Ioan Botez | Ioan Vancea | Ioan T. Morar | Ioan Tănăsescu | Ioan Silviu Suciu | Ioan Ploscaru | Ioan Miclescu-Prăjescu |