These are links to give you information on how to marry in the countries listed below, each country has different regulations. Below are links for marriage instructions in other countries: 

A – H

Afghanistan http://kabul.usembassy.gov/mar.html

Albania http://tirana.usembassy.gov/marriage.html

Armenia http://armenia.usembassy.gov/marriage.html

Austria http://austria.usembassy.gov/marr-div.html#marriage

Azerbaijan http://azerbaijan.usembassy.gov/marriage.html

Belarus http://minsk.usembassy.gov/marriage.html

Belgium http://belgium.usembassy.gov/marriage-in-belgium.html

Belize http://belize.usembassy.gov/information_for_travelers/marrying-in-belize.html

Bosnia & Herzegovina http://sarajevo.usembassy.gov/marriage.html

Brazil http://brazil.usembassy.gov/marriage-info.html

Bulgaria http://bulgaria.usembassy.gov/married5.html

Cambodia http://cambodia.usembassy.gov/getting_married_in_cambodia.html

China http://chengdu.usembassy-china.org.cn/marriage_in_china2.html

Colombia http://bogota.usembassy.gov/marriage.html

Costa Rica http://www.worldheadquarters.com/cr/weddings/

Cuba http://havana.usint.gov/marriageprocess.html

Cyprus http://cyprus.usembassy.gov/uscitizen/marrage.html

Czech Republic http://prague.usembassy.gov/getting_married_in_the_czech_republic.html

Denmark http://denmark.usembassy.gov/getting–maried.html

Dominican Republic http://santodomingo.usembassy.gov/marriage_dr-e.html

Ecuador http://ecuador.usembassy.gov/service/living-in-ecuador/marriage-information.html

Egypt http://egypt.usembassy.gov/consular/acs12.html

El Salvador http://sansalvador.usembassy.gov/marriages.html

Estonia http://estonia.usembassy.gov/marriage_est.html

Finland http://finland.usembassy.gov/marriage.html

Germany http://germany.usembassy.gov/acs/getting_married/

Greece http://athens.usembassy.gov/marriage.html

Guatemala http://guatemala.usembassy.gov/acs_marriage_guatemala.html

Guinea http://conakry.usembassy.gov/marriage2.html

Haiti http://haiti.usembassy.gov/service/useful-information/marriage–divorce-in-haiti.html

Holy See: Getting married in the Vatican http://vatican.usembassy.gov/vatican/married.html

Hong Kong http://hongkong.usconsulate.gov/acs_marriage.html

Hungary http://hungary.usembassy.gov/marriage.html

I – N

India http://chennai.usconsulate.gov/marriageinindia.html

Indonesia http://jakarta.usembassy.gov/us-service/marriage.html

Iraq http://iraq.usembassy.gov/consular/us/birthadoptionmarriage/marriage.html

Ireland http://dublin.usembassy.gov/service/other-citizen-services/other-citizen-services/marriage-in-ireland.html

Israel http://israel.usembassy.gov/consular/acs/marriage.html

Italy http://italy.usembassy.gov/marriage-info.html

Jamaica http://kingston.usembassy.gov/family_issues2.html

Japan http://japan.usembassy.gov/e/acs/tacs-7114.html

Jordan http://jordan.usembassy.gov/acs_marriage_jordan.html

Kazakhstan http://kazakhstan.usembassy.gov/married.html

Kenya http://nairobi.usembassy.gov/marriage_in_kenya.html

Korea http://seoul.usembassy.gov/acs_getting_married.html

Kosovo http://pristina.usembassy.gov/kosinfo_5.html

Kuwait http://kuwait.usembassy.gov/civil_marriage_information.html

Kyrgyz http://bishkek.usembassy.gov/marriage.html

Laos http://laos.usembassy.gov/marriage_in_laos.html

Latvia http://riga.usembassy.gov/marryinlatvia.html

Lebanon http://lebanon.usembassy.gov/marriage.html

Lithuania http://vilnius.usembassy.gov/marriage.html

Luxemburg http://luxembourg.usembassy.gov/marriage.html

Macedonia http://macedonia.usembassy.gov/getting_married.html

Malaysia http://malaysia.usembassy.gov/marriage.html

Mexico http://monterrey.usconsulate.gov/marriage_in_mexico.html

Moldova http://moldova.usembassy.gov/marriages.html

Mongolia http://mongolia.usembassy.gov/getting_married.html

Montenegro http://podgorica.usembassy.gov/marriage_in_montenegro.html

Morocco http://morocco.usembassy.gov/service/professional-services/marriage-information.html

Nepal http://nepal.usembassy.gov/service/passports-notaries-and-other-support-for-u/marriage-to-a-nepali.html

Netherlands http://amsterdam.usconsulate.gov/getting_married2.html

Nicaragua http://nicaragua.usembassy.gov/marriage_in_nicaragua.html

Niger http://niamey.usembassy.gov/marriageinniger.html

O – Z

Panama http://panama.usembassy.gov/marriage_in_panama2.html

Paraguay http://paraguay.usembassy.gov/citizen_information/marriage-in-paraguay.html

Peru http://lima.usembassy.gov/residentinfo/marriage-in-peru.html

Philippines http://manila.usembassy.gov/marriage.html

Poland http://poland.usembassy.gov/poland/marriage_poland.html

Portugal http://azores.usconsulate.gov/marriage-info.html

Qatar http://qatar.usembassy.gov/citizen-services/marriage-in-qatar.html

Romania http://romania.usembassy.gov/acs/marriages.html

Russia http://vladivostok.usconsulate.gov/acsmarryrus.html

Serbia http://serbia.usembassy.gov/marriage.html

Singapore http://singapore.usembassy.gov/marriage-in-singapore.html

Slovakia http://slovakia.usembassy.gov/service/american-citizens-services/living-in-slovakia/marriage-in-slovakia.html

Slovenia http://slovenia.usembassy.gov/getting_married.html

Spain http://madrid.usembassy.gov/citizen-services/professional-services/non-emergency-services.html

Sri Lanka & Maldives  http://srilanka.usembassy.gov/service/marriage-in-sri-lanka3.html

Sudan http://sudan.usembassy.gov/getting_married.html

Switzerland http://bern.usembassy.gov/marriage_in_switzerland.html

Tajikistan http://dushanbe.usembassy.gov/marriage.html

Thailand http://bangkok.usembassy.gov/service/marriage.html

Togo http://togo.usembassy.gov/marriage.html

Trinidad & Tobago http://trinidad.usembassy.gov/getting_married_in_tt.html

Tunisia http://tunisia.usembassy.gov/marriage-tunisia.html

Turkey http://turkey.usembassy.gov/marriage_divorce.html

Turkmenistan http://turkmenistan.usembassy.gov/marriage.html

Ukraine http://ukraine.usembassy.gov/ukrainian-issues.html

Dubai http://dubai.usconsulate.gov/dubai_marriage.html

United Kingdom http://london.usembassy.gov/cons_new/acs/scs/marriage_and_civil_partners.html

Uzbekistan http://uzbekistan.usembassy.gov/marriage_registration4.html

Vietnam http://hochiminh.usconsulate.gov/marriage_in_vietnam.html

Zimbabwe http://harare.usembassy.gov/marriage_zimbabwe2.html