Ivan Alexander (Bulgarian: Иван Александър, wanda aka fassara Ivan Aleksandǎr; furta [iˈvan alɛkˈsandər]; asalin rubutun: І<unk>АНЪ АЛЄ<unk>АНдРЪ), wani lokacin kuma ana kiransa John Alexander, ya yi mulki a matsayin Sarkin (Tsar) na Bulgaria daga 1331 zuwa 1371, a lokacin Daular Bulgaria ta biyu. Ba a san ranar haihuwarsa ba. Ya mutu a ranar 17 ga Fabrairu 1371. An yi la'akari da dogon mulkin Ivan Alexander a matsayin lokacin miƙa mulki a tarihin Bulgarian na tsakiyar zamanai. Ivan Alexander ya fara mulkinsa ta hanyar magance matsalolin cikin gida da barazanar waje daga makwabtan Bulgaria, Daular Byzantine da Serbia, da kuma mulkinsa zuwa lokacin farfadowar tattalin arziki da al'adu da addini.
1331 da kuma