Rubuta ci gaba don wannan sakin layi - Kaloyan ko Kalojan (), wanda aka fi sani da sunansa na Vlach Johannitsa ko Ioannitsa (<unk> Oktoba 1207), shi ne Sarkin Bulgaria daga 1196 zuwa 1207. Shi ɗan'uwan Theodor da Asen ne wanda ya jagoranci tayar da kayar baya na Byzantine
na Bulgarians da Vlachs (proto-Romanians na Balkans) a cikin 1185. Tashin ya ƙare tare da maido da 'yancin kai na Bulgaria. Ya shafe shekaru a matsayin ɗan garkuwa a Constantinople a ƙarshen 1180s. Theodor (wanda aka naɗa sarki a ƙarƙashin sunan Bitrus) ya mai da shi abokin mulkinsa bayan da aka kashe Asen a 1196. Bayan shekara guda, aka kashe Theodor-Peter, kuma Kaloyan ya zama sarkin Bulgaria.