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Over the past decade, the application of carbocatalyst systems has been preferred over that of homogeneous catalytic systems because of their advantages such as physical and thermal stability of the catalysts in successive reaction runs and reusability. Among these, the unique chemical, physical and mechanical properties of graphene oxide (GO) and graphene derivatives, particularly sulfonated graphene, as two types of carbocatalysts have led to the development of heterogeneous carbocatalyst systems for efficient organic synthesis. GO and sulfonated graphene are quite prevalent and probably suitable acidic catalysts for both research laboratories and industrial processes. Herein, different organic transformations catalyzed by GO and sulfonated graphene have been reviewed, which show suitable catalytic activities for application in organic reactions. This review is divided into two main parts: (I) organic …