Systems, apparatuses, and methods related to object management in tiered memory systems are discussed. An example method can include writing a memory object to a first memory device of a first type of memory medium. The example method can include determining that a size of the memory object meets or exceeds a threshold data size. The example method can include writing the memory object to a second memory device that comprises a second type of memory medium different than the first type. The first memory medium can be a non-volatile memory comprising phase-change memory or resistive random access memory (RAM) and the second memory medium can be NAND Flash or NOR Flash.