This　feature　article　summarizes　the　recent　progress　in　porous　perovskite　oxides　as　advanced　catalysts　for　both　energy　conversion　applications　and　various　heterogeneous　reactions.　Recently,　research　has　been　focused　on　specifically　designing　porous　perovskite　materials　so　that　large　surface　areas　can　be　harnessed　and　surface　properties　can　be　improved.　Numerous　potential　applications　of　porous　perovskites　have　been　investigated,　including　heterogeneous　catalysis　and　air　battery　applications　that　rely　on　interactions　and/or　reactions　of　other　components　with　porous　perovskites.　The　main　objective　of　this　article　is　to　examine　the　progress　of　recent　research　studies　on　porous　perovskite　nanomaterials,　including　the　preparation　methods　and　their　applications　in　catalysis　and　batteries.　The　wide　variety　of　the　related　knowledge　on　porous　mixed　oxides　can　provide　guidance　for　researchers　with　interests　ranging　from　the　design　of　functionalized　materials　to　the　field　of　heterogeneous　catalysis　and　electrochemical　applications.