A waste toner collection container includes a housing main body, a detection chamber with an opening and a waste toner introduction inhibition member. The housing main body collects waste toner therein. The detection chamber engages with the housing main body and enables a sensor to determine whether the waste toner reaches a predetermined amount, by interrupting a light path of the sensor. The opening opens toward the housing main body. The waste toner introduction inhibition member seals the opening to inhibit the waste toner in the housing main body from being introduced into the detection chamber before the waste toner in the housing main body reaches the predetermined amount, and is fractured by a pressing force of the waste toner to permit the waste toner to be introduced into the detection chamber as the waste toner in the housing main body reaches the predetermined amount.