Asahi:
Official site in english http://www.asahibeer.co.jp/english/company-e/index.html
Official site in japanese http://www.asahibeer.co.jp

Suntory:
Official site in english http://www.suntory.com
Official site in japanese http://www.suntory.co.jp/index.html

Kirin:
Official site in english http://www.kirin.co.jp/english/
Official site in japanese http://www.kirin.co.jp/

Sapporo:
Official site in english http://www.sapporobeer.jp/english/index.html
Official site in japanese http://www.sapporobeer.co.jp
American site http://www.sapporobeer.com

Orion:
Official site in english http://www.orionbeer.co.jp/english/index.htm
Official site in japanese http://www.orionbeer.co.jp/
 
 

Museum of Yebisu Beer:
http://www.sapporobeer.co.jp/english/when/museum/museum.html

Brewers association of Japan (con notizie storiche sulla produzione di birra in giappone)
http://www.brewers.or.jp/index.html

History of beer in Japan and in Okinawa
http://www.orionbeer.co.jp/english/alacarte/kiso/

Can Beer Gallery (by The Beer House)
 http://www2.odn.ne.jp/~cai30510/h_bemenu.htm
 

Nari Yuki COLLECTION,  1358 cans (december 2001) from 1992. Image of each can. Useful links. In Japanese
http://www.linkclub.or.jp/~nariyuki/

Yamada Mituru COLLECTION, 448 cans (december 2001) from 1986. In Japanese
http://homepage2.nifty.com/beer-can/

Shunsuke Takano COLLECTION, 400 cans (december 2001) of the last 10 years. In Japanese, with english introduction
http://www02.so-net.ne.jp/~stakano/index-e.html

M. Naka, COLLECTION, 294 cans (december 2001), with description of each can. In Japanese
http://www2s.biglobe.ne.jp/~m-naka1/beer/

H. Tabata., COLLECTION, in Japanese.
http://www2.justnet.ne.jp/~tabata/beer/beer.htm

Collection of Mini Cans (135cl)
http://www.geocities.co.jp/Foodpia-Olive/4847/mini.htm