Developer conferences in Japan 2026

There are 3 developer conferences in Japan with a 2026 edition and a public sponsor or exhibitor list or published sponsorship prices. The biggest is RubyKaigi 2026, with 38 companies listed.

All events 3 Trade shows 1

44 companies listed at these events

Developer

All industries Developer3 Healthcare1 AI1 Finance1 Science1

Japan

2026

Timing

Upcoming1 Next 90 days1

Year

Any year 20263

Size

Companies listed

Prices

Sponsorship packages

Publishes prices1 Package under $5k1 Package under $10k1 Package under $25k1

Type

All events3 Trade shows1

Trade shows: 100 or more exhibitors, or an expo floor on the organizer’s own description.

Clear all

3 events

Most companies listed

Most companies listed Soonest first Most new companies Most companies returning Cheapest package Biggest top package

#	Conference	Companies	Packages from
1	1. RubyKaigi Apr 22–24, 2026 · Hakodate, Japan	38companies
2	2. Japan IT Week Oct 21–23, 2026 · Chiba, Japan	6companies
3	3. KubeCon + CloudNativeCon Japan Jul 29–30, 2026 · Yokohama, Japan		from$3,000

Companies: sponsors and exhibitors on each event’s current edition, read from its own directory, sponsor page or prospectus. New: not listed at the previous edition. Returning: share of the previous edition’s companies listed again.

Key facts

Across the 3 developer conferences in Japan 2026.

Events31 upcoming

Companies listed44across their current editions

Trade shows1100+ exhibitors or an expo floor

Biggest38RubyKaigi

Questions

What are the biggest developer conferences in Japan with a 2026 edition?

By companies listed at their current edition: RubyKaigi (38), Japan IT Week (6), KubeCon + CloudNativeCon Japan (0).