List of lost properties on Prefectural Police websites

Click on the prefecture where you think you lost your property.
List of Prefectural Police by region
Region Prefectural Police
Hokkaido Hokkaido
Tohoku Aomori, Iwate, Miyagi, Akita, Yamagata, Fukushima
Tokyo Metropolitan Police Department
Kanto Ibaraki, Tochigi, Gunma, Saitama, Chiba, Kanagawa, Niigata, Yamanashi, Nagano, Shizuoka
Chubu Toyama, Ishikawa, Fukui, Gifu, Aichi, Mie
Kinki Shiga, Kyoto, Osaka, Hyogo, Nara, Wakayama
Chugoku Tottori, Shimane, Okayama, Hiroshima, Yamaguchi
Shikoku Tokushima, Kagawa, Ehime, Kochi
Kyushu Fukuoka, Saga, Nagasaki, Kumamoto, Oita, Miyazaki, Kagoshima, Okinawa
The linked page lists the found properties (Note 1) submitted or notified to police stations under the Prefectural Police after December 10, 2007, and whose owners have not been found or located.
Among the found properties submitted or notified, items submitted or notified to a police station in a prefecture other than the prefecture in which they were found, and which fall under valuable property definition (Note 2), are also listed on the website of the Prefectural Police having jurisdiction over the place of finding.
(Note) 1
"Found property" means lost property, buried property, and quasi-lost property (another person's property that came into possession by mistake, a property left by another person, and escaped livestock) that were found (discovered in the case of buried property and property left by another person).
(Note) 2
"Valuable property" means the following:
・Cash of 10,000 yen or more
・Securities whose denomination or total value is 10,000 yen or more
・Items whose total value is clearly recognized to be 10,000 yen or more
・Driver's licenses, National Health Insurance cards, Alien Registration Certificates, and other documents issued pursuant to provisions of law or orders based thereon, which prove identity or position of an individual, or rights belonging exclusively to an individual
・Deposit/savings bankbooks, cash deposit/savings cards, or credit cards
・Mobile phone devices