As in most of the countries, in order to visit Costa Rica, the traveler must show his or her passport. The passport must be valid during the following 6 months from the entry date to Costa Rica.

Citizens holding valid passports from the following countries can stay in Costa Rica for 90 days without a visa:
Argentina, Austria, Belgium, Brazil, Canada, Denmark, Finland, France and Germany dependencies, Greece, Holland and dependencies, Hungary, Israel, Italy, Japan, Liechtenstein, Luxembourg, Norway, Panama, Paraguay, Poland, Portugal, Puerto Rico, Romania, South Korea, Spain, Sweden, Switzerland, Trinidad & Tobago, United Kingdom, United States of America, Czech Republic and Uruguay.

Citizens holding valid passports from the following countries are exempt from all visa requirements for stays of 30 days in Costa Rica, though once inside the country, they can apply for extension from the Immigration office, for an authorized period of stay of 90 days:
Antigua & Barbuda, Australia, Bahamas, Barbados, Belize, Bolivia, Bulgaria, Chile, Dominica, El Salvador, Grenada, Guatemala, Guyana, Honduras, Iceland, Ireland, Jamaica, Kenya, Mexico, New Zealand, Philippines, Russia, Saint Kitts/Nevis, San Marino, St. Lucia, St. Vincent, Singapore, Slovakia, South Africa, Suriname, Taiwan, Turkey, The Vatican, Venezuela, Estonia and Monaco.

Citizens of all countries not listed above are required a visa from a Costa Rican embassy or consulate before traveling.