Every traveler to Nicaragua [1] must have a passport valid for at least six months following the date of entry. A visa is required only for citizens of the following countries: Afghanistan, Albania, Bosnia and Herzegovina, Colombia, Cuba, Haiti, India, Iran, Iraq, Jordan, Lebanon, Libya, Nepal, Pakistan, People’s Republic of China, People’s Republic of Korea, Somalia, Sri Lanka, Vietnam, and Yugoslavia. Everyone else is automatically given a tourist pass good for three months.
Required: A certificate of vaccination against yellow fever is required for all travelers over one year of age and arriving from affected areas.
Recommended: Before traveling to Nicaragua, be sure your tetanus, diphtheria, measles, mumps, rubella, and polio vaccines are up-to-date. Protection against hepatitis A and typhoid fever is also recommended for all travelers.
Links:
[1] http://www.moon.com/destinations/nicaragua