A toner cartridge comprising: a housing extending in a first direction, the housing including: a first toner-accommodating section having a first interior space elongated in the first direction; a second toner-accommodating section having a second interior space elongated in the first direction and in communication with the first interior space, the second toner-accommodating section being positioned at one side of the first toner-accommodating section in a second direction; and a first opening positioned at one side of the second toner-accommodating section in the first direction, the first opening allowing toner in the second interior space to be discharged therethrough; an agitator rotatable about a first axis extending in the first direction, the agitator being configured to agitate the toner in the first interior space and to convey the toner from the first interior space to the second interior space; an auger rotatable about a second axis extending in the first direction, the auger being configured to convey the toner from the second interior space to the first opening; a first protrusion positioned at the one side of the second toner-accommodating section and at one side of the first opening in the first direction, the first protrusion extending in the first direction; and a second protrusion positioned at an other side of the second toner-accommodating section in the first direction, the second protrusion extending in the first direction, characterized in that a width of the second protrusion in a third direction crossing the first direction and the second direction is different from a width of the first protrusion in the third direction. a housing extending in a first direction, the housing including: a first toner-accommodating section having a first interior space elongated in the first direction; a second toner-accommodating section having a second interior space elongated in the first direction and in communication with the first interior space, the second toner-accommodating section being positioned at one side of the first toner-accommodating section in a second direction; and a first opening positioned at one side of the second toner-accommodating section in the first direction, the first opening allowing toner in the second interior space to be discharged therethrough; a first toner-accommodating section having a first interior space elongated in the first direction; a second toner-accommodating section having a second interior space elongated in the first direction and in communication with the first interior space, the second toner-accommodating section being positioned at one side of the first toner-accommodating section in a second direction; and a first opening positioned at one side of the second toner-accommodating section in the first direction, the first opening allowing toner in the second interior space to be discharged therethrough; an agitator rotatable about a first axis extending in the first direction, the agitator being configured to agitate the toner in the first interior space and to convey the toner from the first interior space to the second interior space; an auger rotatable about a second axis extending in the first direction, the auger being configured to convey the toner from the second interior space to the first opening; a first protrusion positioned at the one side of the second toner-accommodating section and at one side of the first opening in the first direction, the first protrusion extending in the first direction; and a second protrusion positioned at an other side of the second toner-accommodating section in the first direction, the second protrusion extending in the first direction, characterized in that a width of the second protrusion in a third direction crossing the first direction and the second direction is different from a width of the first protrusion in the third direction.