Japan JSDF Radar UAP Detections — Parliamentary Disclosure

On April 13, 2023, in response to formal questions in the Japanese National Diet (Parliament), the Ministry of Defense disclosed that the Japan Air Self-Defense Force had recorded multiple instances of unidentified aerial objects detected by operational radar systems that could not be attributed to any known aircraft, drone, or natural phenomenon. The disclosure followed Japan's 2020 establishment of formal UAP reporting protocols — the first such protocols in Japanese military history. The 2020 protocols were introduced following the US Navy's 2019 UAP reporting policy change and were coordinated through JSDF-DoD bilateral military consultations. The 2023 parliamentary disclosure confirmed that the 2020 protocols had generated formal UAP case reports from operational JASDF radar operators and aircrews. Specific case details — locations, radar characteristics, and sensor data — were withheld for national security reasons. The Japanese Ministry of Defense indicated the detections included objects performing maneuvers at speeds and with flight profiles inconsistent with known commercial and military aircraft. Japan's disclosures are part of a broader pattern of allied nation UAP transparency following the US 2021 ODNI preliminary assessment, with Japan, the UK (2023 DSIT report reference), Canada, and Australia all formally acknowledging UAP detection through official government channels between 2020–2023.