Abstract: A terminal apparatus, a management apparatus, a communication system, a communication method, a management method, and a non-transitory computer readable medium capable of reliably acquiring a cryptographic key for quantum cryptographic communication are provided. A terminal apparatus (10) includes an acquisition unit (11) that acquires a cryptographic key from a management apparatus by designating communication source identification information and communication destination identification information for the management apparatus, and requesting the cryptographic key from the management apparatus, the management apparatus managing a cryptographic key distributed by using a QKD technology, and a communication unit (12) that performs cryptographic communication with another terminal apparatus by using the cryptographic key acquired by the acquisition unit (11).