A visa is a conditional authorization granted by a polity to a foreigner that allows them to enter, remain within, or leave its territory. Visas typically include limits on the duration of the foreigner's stay, areas within the country they may enter, the dates they may enter, the number of permitted visits, or if the individual can work in the country in question. Visas are associated with the request for permission to enter a territory and thus are, in most countries, distinct from actual formal permission for an alien to enter and remain in the country. In each instance, a visa is subject to entry permission by an immigration official at the time of actual entry and can be revoked at any time. Visa evidence most commonly takes the form of a sticker endorsed in the applicant's passport or other travel document but may also exist electronically. Some countries no longer issue physical visa evidence, instead recording details only in immigration databases.
The Government of the Macau Special Administrative Region allows citizens of specific countries/territories to travel to Macau for tourism or business purposes for periods ranging from 14 to 180 days without having to obtain a visa. For other entry purposes, such as establishing residence on a long-term basis, a different policy applies.
Visitors to the mainland of the People's Republic of China must obtain a visa from one of the Chinese diplomatic missions unless they are citizens of one of the visa-exempt countries. The residents of Hong Kong, Macao, and Taiwan with Chinese nationality may stay in Mainland indefinitely as long as their travel documents are valid.
A Mexican visa is a document issued by the National Institute of Migration, dependent on the Secretariat of the Interior, with the stated goal of regulating and facilitating migratory flows into the country.
Visitors to Montenegro must obtain a visa from one of the Montenegrin diplomatic missions unless they are citizens of one of the visa-exempt countries. Visa policy is regulated by Regulation on Visa Regime Act. Where there are no diplomatic or consular representations of Montenegro, visa requiring foreigners may obtain them from diplomatic or consular representations of Serbia, Bulgaria and Croatia.
The visa policy of Albania allows citizens of certain countries to enter Albania without a visa. Citizens of certain other countries must obtain a visa from one of the Albanian diplomatic missions. Alternatively, they may obtain an electronic visa.
The visa policy of the Philippines is governed by Commonwealth Act No. 613, also known as the Philippine Immigration Act, and by subsequent legislation amending it.
The visa policy of Malaysia consists of the requirements for foreign nationals to travel to, enter, and remain in Malaysia. Most visitors to Malaysia are granted visa-free entry for a period of 90, 30, or 14 days respectively.
The visa policy of Singapore deals with the requirements a traveller must meet to enter Singapore. A foreign national, depending on their country of origin, must meet certain requirements to obtain a visa, which is a permit to travel, to enter and remain in the country. A visa may also entitle the visa holder to other privileges, such as a right to work, study, etc. and may be subject to conditions.
The visa policy of the United Arab Emirates allows citizens of certain countries to enter the United Arab Emirates without a visa. Citizens of certain other countries must obtain a visa from one of the UAE diplomatic missions. Alternatively, they may obtain an online visa through Smart Service or airlines.
Visitors to Azerbaijan must obtain a visa from one of the Azerbaijani diplomatic missions unless they are citizens of one of the visa-exempt countries, or citizens eligible for an electronic visa on arrival, or citizens eligible for an electronic visa.
Visitors to Pakistan typically must obtain a visa from one of the Pakistani diplomatic missions. Pakistani missions abroad offer various categories of visas, with some travelers eligible for visa on arrival if traveling as part of a group tour, or for business.
The visa policy of Lebanon deals with the requirements which a foreign national wishing to enter the Republic of Lebanon must meet to be permitted to travel to, enter and remain in the country.
Visitors to Tunisia must obtain a visa from one of the Tunisian diplomatic missions unless they are citizens of one of the visa-exempt countries.
Visitors to Qatar must obtain a visa, unless if they are citizens of one of the GCC countries or if they are citizens of one of the countries eligible for a visa waiver on arrival.
Visitors to Oman must obtain a visa prior to travel unless they come from one of the visa-exempt countries.
Most visitors to Bahrain may obtain a visa on arrival or an e-Visa before traveling.
Visitors to Cuba must obtain a visa before travel or a tourist card from one of the Cuban diplomatic missions, travel agencies or authorized airlines unless they come from one of the visa exempt countries.
Visitors to Egypt must obtain a visa from one of the Egyptian diplomatic missions unless they come from one of the visa exempt countries or countries that are eligible for visa on arrival.
The British Overseas Territories maintain their own entry requirements different from the visa policy of the United Kingdom. As a general rule, British citizens do not have automatic right of abode in these territories.
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