Nicaragua has a free mobility agreement with El Salvador, Guatemala, and Honduras, so the citizens of these territories will only need their National Identity Document (DNI) to travel to this country.
On the other hand, this is the list of countries that do not need a visa, but a passport, for stays of up to 90 days. This document must have a minimum validity of six months at the time of the trip:
A: Andorra, Antigua and Barbuda, Argentina, Australia, and Austria
B: Bahamas, Bahrain, Barbados, Belgium, Belize, Brazil, Brunei-Darussalam and Bulgaria
C: Czech Republic, Canada, Chile, Cyprus, Costa Rica, and Croatia
D: Dinamarca
E: Estonia
F: Finland and France
G: Germany, Greece
H: Hong Kong, and Hungary
I: Ireland, Iceland, Israel, Italy, Marshall Islands, and the
J: Japan
K: Kuwait
L: Latvia, Liechtenstein, Lithuania, and Luxembourg
M: Macedonia, Madagascar, Malaysia, Malta, Mexico, and Monaco
N: Netherlands, Norway and New Zealand
P: Panama, Paraguay, Poland, and Portugal
Q: Qatar
R: United Kingdom, and Romania
S: Solomon Islands, South Korea, Slovakia, Slovenia, Spain, Saint Kitts, and Nevis, San Marino, Saint Vincent and Grenadines, Saint Lucia, São Tomé and Príncipe, Singapore, South Africa, Sweden, and Switzerland
T: Taiwan, Trinidad and Tobago, Turkey and Tuvalu
U: United States, Uruguay
V: Vatican City, Vanuatu
In addition to the passport, to enter the country, the traveler is requested a return ticket to the place of origin and a proof that he has the economic means to remain in Nicaragua.