The following countries can gain entry to Japan without a visa. Length of stay varies from 30 to 90 days depending on your nationality. Andorra, Argentina, Australia, Austria, Bahamas, Barbados, Belgium, Brunei, Bulgaria, Canada, Chile, Costa Rica, Croatia, Cyprus, Czech Rep., Denmark, Dominican Rep., El Salvador, Estonia, Finland, France, Germany, Greece, Guatemala, Honduras, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Israel, Italy, Latvia, Lesotho, Liechtenstein, Lithuania, Luxembourg, Macau, Macedonia, Malaysia, Malta, Mauritius, Mexico, Monaco, Netherlands, New Zealand, Norway, Poland, Portugal, Republic of Korea, Romania, San Marino, Singapore, Slovakia, Slovenia, South Korea, Spain, Suriname, Sweden, Switzerland, Taiwan, Thailand, Tunisia, Turkey, United Arab Emirates, U.S.A, United Kingdom and Uruguay.
All foreigners should expect to be photographed, fingerprinted and questioned every time they enter Japan.
Japanese visa exemption rules
Foreign embassies in Japan