An image forming apparatus capable of removing leaked toner includes: a toner cartridge storing a toner and having a toner supply window for supplying the toner; a housing for detachably accommodating the toner cartridge; and a toner receptacle provided to the housing receiving the toner leaking from the toner cartridge when the toner cartridge is detached from the housing. The image forming apparatus also includes a toner remover to remove the toner adhered to the outer periphery of the toner cartridge. As a result, the inner and outer peripheries of the image forming apparatus are not polluted, and the components of the image forming apparatus function properly.