A container includes a container body, an opening/closing member, and a suppressing portion. The container body has a circumferential surface, and has an opening in the circumferential surface through which powder contained in the container body is discharged to outside of the container body. The opening/closing member has an inner circumferential surface. The opening/closing member is mounted to the container body, and is moved, when the container body is relatively rotated to one side in a circumferential direction of the container body, from a closed position to an open position. The opening/closing member is moved, when the container body is relatively rotated to another side in the circumferential direction, from the open position to the closed position. The suppressing portion is formed in the inner circumferential surface of the opening/closing member. The suppressing portion suppresses leakage of the powder from the opening/closing member to outside of the opening/closing member.