Japan

Existing Systems

Subways
Fukuoka
Hiroshima
Kawasaki
Kobe
Kyoto
Nagoya
Sapporo
Sendai
Yachio-Funabashi

Please note: This section is still under construction

Subway: Chikatetsu

Japan is to railfans what porno theatres are to Pee Wee Herman.
There are so many urban electric railways here that it's almost impossible to catalog them all. Here's a starting taste, though.

Japan Tramway Society
Railfan Japan - fire up the coffee pot and make sure it's full!
Hisakyu's Railway Guide - a station by station guide to Japan's railways
Shinaidensha by Masahiro Yamamoto
ICHIBAN, by Nozomu Takayama, with some nice photos
CG,illustration(railway) by Yasuji Iwabuchi, in japanese only
Japanese Street Cars and mini Railways
Masahiro Murakami's Iyotetsu page
Ikkoh world
Japanese Trains - a great page with lotsa links and traction photos
Kyushu Railway Company - Official Homepage of JR Kyushu
.Hankyu Railways - Official Homepage of the Hankyu Line
.Keisei Railways - Official Homepage of the Keisei Railway Company.
Odakyu Electric Railway - Odakyu Railway Homepage
Keikyu Railroad Fan - Unofficial Keikyu Homepage with many photos of the rolling stock.
Nagoya Railroad "Meitetsu" - Railroad Company in Nagoya
Yokhoo's Japanese Streetcars
Aono's Railway Photo Gallery. Don't miss it. Covers streetcars in Hakodate City,  Toyohashi City, Gifu City, Toyama, Takaoka,  Kyoto, Osaka,  Okayama,  Hiroshima, Matsuyama, Kochi, Kyushu, Kumamoto, Nagasaki City and Kagoshima City  Also images of many local railways, the last interurbans.
Japanese Tram Theatre
Nishi Nippon Railway Co.
Private Railways in Japan
AONO's Railway Photo Gallery - infrequently updated, includes subway and tram photos
FH Hamada's Monorails of Japan
Tramways of Japan
Following the blinking trams, and please try not to throw up. arigato.

Kashima Line 
Ibarigin Kotsu Line
Kinki Hihon Railway
Okoyama