Serbia and Montenegro, a former confederated union of Serbia and Montenegro; existed 2003–2006

Montenegro (Republic of Montenegro), a country on the Adriatic coast of the Mediterranean Sea

Kingdom of Montenegro, former Kingdom of Montenegro 1910–1918

Fernanda Montenegro (1927—), Brazilian actress

MGO may refer to Metal Gear Online

Metropolitanate of Montenegro and the Littoral, a diocese of the Serbian Orthodox Church in Montenegro

Nikola, Crown Prince of Montenegro (1944—), pretender to the throne of Montenegro

Nicholas I of Montenegro (1841–1921), king of Montenegro 1910–1918

Montenegro, city in the state of Rio Grande do Sul, Brazil

Metropolitan Danilo I Petrović-Njegoš (1670–1735), Metropolitan of Montenegro

Prince Michael of Montenegro (1908–1986), pretender to the throne of Montenegro

Montenegro Airlines, national airline of Montenegro

Principality of Montenegro, former principality 1852–1910

Benito Jerónimo Feijóo e Montenegro (1676–1764), Galician monk and scholar

Sasha Montenegro (1950—), Mexican actress of Montenegrin heritage

Jonathan Montenegro (1978—), Venezuelan actor and singer, former member of Menudo

Montenegro, a municipality in the department of Quindío, Colombia

University of Montenegro

Elena of Montenegro (1873–1952), daughter of King Nikola I Petrovic-Njegos of Montenegro, married to King Victor Emmanuel III of Italy

Idol Serbia, Montenegro & Macedonia, a former American Idol-like show in the Balkan states

Zorka of Montenegro (1864–1890), eldest child of the King Nicholas I

Hugo Montenegro (1925–1981), American composer of film soundtracks

Pilar Montenegro (1972—), Mexican singer

Danilo, Crown Prince of Montenegro (1871–1939), crown prince of Montenegro

Prince Boris of Montenegro (1980—), first son of Prince Nikola of Montenegro

Milica of Montenegro (1866–1951), princess of Montenegro

Anastasia of Montenegro (1868–1935), daughter of King Nikola I Petrović-Njegoš of Montenegro

Montenegro Lines, Philippine shipping company

Ricardo Montenegro (contemporary), El Salvadoran politician and government minister until 1994

Raúl Montenegro (1949—), Argentine biologist, environmentalist, and activist

Ariel Alfredo Montenegro, Argentine footballer

Roberto Montenegro (1887–1968), Mexican painter, illustrator, and stage designer

Prince Milo of Montenegro (1889–1978), prince of Montenegro

Julio César Méndez Montenegro (1915–1996), President of Guatemala 1966–1970

Montenegro, Spain, Cortijada in Andalucia , Spain

Orlando Montenegro Medrano (20th c.), President of Nicaragua in 1966

Radio Free Montenegro, a radio station in Podgorica, Montenegro

Montenegro, a film by Dušan Makavejev

Angela Montenegro, a character in the American TV series Bones.

Crna Gora, which has the same meaning in Serbo-Croatian.