1.
A-style
2.
Advanced Construction Technology Center
3.
Advanced Medical Care
2006
4.
Aging Well
5.
AI Medical Service
6.
AI Silk
2015
7.
Aiko Medical
8.
Aikuri
9.
AIN
1969
10.
AIRS
11.
Aitoku Medical and Welfare Center
12.
AKAEDAKAI MEDICAL
13.
Akiru Municipal Medical Center
14.
Akita Wood Technology Transfer Foundation
15.
All Japan Judo Federation
16.
All Japan Real Estate Association
17.
All-Japan Federation of National Health Insurance Organization
1948
18.
ALMEC
19.
AMBICION
2015
20.
Anabuki Medical Care
21.
Animal Quest
22.
Anispi Holdings
2016
23.
Anshin Support
24.
Aoiro-sendainaka
25.
Aomori Prefecture Fishing Grounds Association