伊朗现在可以落地签了

资料来源：http://wikitravel.org/en/Iran
A valid passport and visa are required for travel through Iran. In 2006 the rules for obtaining a tourist visa changed and it has become much easier for nationals of many countries to get in to Iran by obtaining a visa at the airport. Visa are issued at the Imam Khomeini and Mehrabad airports in Tehran, and also the airports at Mashad, Shiraz, Tabriz and Esfahan. The visa is valid for up to one week and costs US$50. You will receive the forms on arrival. You are advised to bring passport photos with you however in many cases they are not collected. Visas are only issued at the airport for holders of ordinary passports from the states below:

Albania, Armenia, Australia, Austria, Azerbaijan, Bahrain, Belarus, Belgium, Bosnia and Herzegovina, Brazil, Brunei, Bulgaria, China, Colombia, Croatia, Cuba, Cyprus, Denmark, Finland, France, Georgia, Germany, Greece, Hungary, India, Indonesia, Ireland, Italy, Japan, Kazakhstan, Democratic People’s Republic of Korea, Republic of Korea, Kuwait, Kyrgyzstan Lebanon, Luxembourg, Malaysia, Mexico, Mongolia, Netherlands, New Zealand, Norway, Oman, Palestine, Peru, Philippines, Poland, Portugal, Qatar, Romania, Russian Federation, Saudi Arabia, Singapore, Slovakia, Slovenia, Spain, Sweden, Switzerland, Syria, Tajikistan, Thailand, Turkmenistan, Ukraine, United Arab Emirates, Uzbekistan, Venezuela, Vietnam.

It is generally not possible to get an extension for the one week visa. There is a large stamp on it which specifically states "non-extendable". If you wish to stay for longer than a week, or you are not resident of one of the countries listed above, you will need to apply for a Tourist Visa before you arrive in Iran.

Although it has become easier to get a Tourist Visa in recent years, whether the process takes one day or one month depends largely on your nationality and the staff of the embassy you are applying to. Your best bet is to apply to the Iranian embassy in your own country at least three months before your departure, but it is possible in other countries. Women need to make sure they are veiled in their submitted passport-sized photos. US citizens can apply for a visa at the Iranian Interest Section of the Pakistani Embassy in Washington, DC. Transit visas are usually easier to get than tourist visas (usually for one or two weeks) and very useful for people traveling between Europe and South Asia.