List of wars involving Costa Rica

This is a list of wars involving the Republic of Costa Rica.

Costa Rican military victory

Costa Rican military defeat

Indecisive or unclear outcome

Ongoing conflict

Conflict	Combatant 1	Combatant 2	Results
Ochomogo War (1823)	Republicans	Imperialists	Republican victory The First Mexican Empire was already dissolved at the time, Republicans moved the capital from Cartago to San José.
League War (1835)	San José	Alajuela Cartago Heredia	San Jose's victory
Invasion of Guanacaste (1836)	Costa Rica	Nicaragua Costa Ricans exiled	Victory
Filibuster War (1855–1857)	Costa Rica Nicaragua Kingdom of Mosquitia Guatemala Honduras El Salvador United States	Filibusters	Victory William Walker's army is defeated and he is arrested by the American Navy
Barrios' War of Reunification (1885)	El Salvador Mexico Costa Rica Nicaragua	Guatemala Honduras	Victory Withdrawal of Guatemalan soldiers Death of Justo Rufino Barrios
World War I (1918)	France United Kingdom Russia United States Italy Japan China Canada Australia New Zealand India South Africa Serbia Montenegro Romania Belgium Greece Portugal Brazil Cuba Panama Guatemala Nicaragua Costa Rica Honduras	Germany Austria-Hungary Ottoman Empire Bulgaria	Victory End of the German, Russian, Ottoman, and Austro-Hungarian empires Formation of new countries in Europe and the Middle East Transfer of German colonies and regions of the former Ottoman Empire to other powers Establishment of the League of Nations
Coto War (1921)	Costa Rica	Panama	Victory Panama ceded Coto to Costa Rica^[1]
World War II (1941–1945)	United States Soviet Union United Kingdom China France Poland Canada Australia New Zealand India South Africa Yugoslavia Greece Denmark Norway Netherlands Belgium Luxembourg Czechoslovakia Brazil Mexico Panama Costa Rica El Salvador Guatemala Honduras Nicaragua Dominican Republic Cuba	Germany Japan Italy Hungary Romania Bulgaria Croatia Slovak Republic (1939–1945) Thailand Manchukuo Mengjiang	Victory Collapse of the Third Reich Fall of Japanese and Italian Empires Creation of the United Nations Emergence of the United States and the Soviet Union as superpowers Beginning of the Cold War
Costa Rican Civil War (1948)	Costa Rica Calderón Forces People's Vanguard Party Somoza Forces	National Liberation Movement Ulatistas	Regime change Teodoro Picado Michalski toppled
Calderonista invasion of Costa Rica (1955)	Costa Rica	Calderón Forces Nicaragua	Victory Nicaraguan withdrawal from Costa Rica
Dominican Civil War (1965–1966)	Dominican Loyalists United States Brazil Paraguay Honduras Nicaragua Costa Rica El Salvador	Dominican Constitutionalists	Victory Juan Bosch excluded from Presidency Election of Joaquín Balaguer

References

^ Tomán, René De La Pedraja. Wars of Latin America, 1899-1941, p. 100. Jefferson, NC: McFarland &, 2006.

[1] Tomán, René De La Pedraja. Wars of Latin America, 1899-1941, p. 100. Jefferson, NC: McFarland &, 2006.

[1]

Lists of wars involving North American countries
Sovereign states	Antigua and Barbuda Bahamas Barbados Belize Canada Cuba Dominica Dominican Republic El Salvador Grenada Guatemala Haiti Honduras Jamaica Mexico Nicaragua Panama Saint Kitts and Nevis Saint Lucia Saint Vincent and the Grenadines Trinidad and Tobago United States
Dependencies and other territories	Anguilla Aruba Bermuda Bonaire British Virgin Islands Cayman Islands Curaçao Greenland Guadeloupe Martinique Montserrat Puerto Rico Saint Barthélemy Saint Martin Saint Pierre and Miquelon Saba Sint Eustatius Sint Maarten Turks and Caicos Islands United States Virgin Islands

Years in Costa Rica (1821–present)
19th century	1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900
20th century	1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
21st century	2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025
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