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 that rely on interactions and/or reactions of other components with porous perovskites. The main objective of our research is to examine the progress of recent research studies on porous perovskite nanomaterials, including the preparation methods and their applications in catalysis. 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.