TOKYO BIG SIGHT LOST AND FOUND
Tokyo Big Sight lost and found: event, exhibition hall, and locker routes
How to report an item lost at Tokyo Big Sight during an event and after the event, with separate guidance for coin lockers and event organizers.
Last verified: September 29, 2026
Short answer
Tokyo Big Sight's official guidance separates event-day custody from post-event custody. During an event, contact the event organizer or the venue information desk. After the event, Tokyo Big Sight directs lost-and-found inquiries to its West Security Center, also described on the official contact page as the disaster prevention center, at 03-5530-1129. A coin-locker item or an item lost on a train, bus, or in a nearby commercial facility requires a separate report.
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What to do
- 1
Record the event and hall
Write down the event name, date, East, West, or South hall, exhibition number, booth, meeting room, gate, restroom, food area, and the route after the last sighting.
- 2
Report during the event
Tokyo Big Sight's official FAQ says to contact the event organizer or the venue information desk while the event is being held. The organizer may keep event-specific records.
- 3
Use the venue route after the event
After the event, contact Tokyo Big Sight's West Security Center using the current official contact information. The published number is 03-5530-1129.
- 4
Check lockers and outside custody
For a coin-locker item, contact the locker operator or the venue route listed by the official FAQ. For stations, trains, buses, taxis, hotels, or nearby facilities, report to those operators separately.
Frequently asked questions
Where do I report a lost item at Tokyo Big Sight during an event?
The official FAQ says to contact the event organizer or the venue information desk during the event. Give the event name, hall, booth, time, and item details.
Where do I report it after the event ends?
Tokyo Big Sight directs post-event lost-and-found inquiries to the West Security Center. Its official contact page lists 03-5530-1129.
What if I lost something in a Tokyo Big Sight coin locker?
Use the locker operator or the venue contact route stated in the official FAQ. Include the locker area, number if known, payment method, and time.
Does Tokyo Big Sight handle items lost at a nearby station?
No. Tokyo Big Sight's venue route is for the venue and its controlled areas. Contact the railway, bus, taxi, hotel, or commercial facility separately.
Official sources
Rules can change. Confirm the latest requirements with the holder and carrier.
Related recovery guides
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We can contact up to five selected facilities in Japanese. The start fee is $19; a size-based success fee is due only after a matched item reaches us.
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