
Henri Michel Eugène Avaert was a Belgian soldier and colonial administrator in the Congo Free State. He was the second commander of the Force Publique, the armed police.

Ernest Baert was a Belgian soldier, explorer and colonial administrator who was active in the Congo Free State.

Captain Jérôme Becker was a Belgian explorer and artillery officer who led several expeditions into Central Africa on behalf of the International African Association (AIA) and the Congo Free State, participating in some of the AIA's earliest explorations of Central Africa.
Lucien Bia was a Belgian soldier and explorer of the Congo.

Omer Bodson was the Belgian officer who shot and killed Msiri, King of Garanganze (Katanga) on 20 December 1891 at Bunkeya in what is now the DR Congo. Bodson was then killed by one of Msiri's men.

Captain Camille-Aimé Coquilhat was a Belgian soldier, explorer and colonial civil servant who finished his career as Vice Governor-General of the Congo Free State from 1890 until his death in 1891. He was notably an associate of Henry Morton Stanley during his expeditions in the Haut-Congo during the mid-1880s.
Paul-Marie-Adolphe Costermans was a Belgian soldier and colonial civil servant. After a brief career in the Belgian Army, Costermans enlisted for service in the military of the Congo Free State, the Force Publique, in 1890 and later served in the colony's administration. During several periods of service in the colony, Costermans rose through the ranks. Between 1904 and his death in 1905, he held the position of Vice Governor-General of the Congo.

Henri De Bruyne was a sergeant in the Force Publique of the Congo Free State that was sent to Kasongo, Congo Free State, in 1890. He was killed by the soldiers of Sefu bin Hamid.

Major-General Sir Francis Walter de Winton was a British Army officer, colonial administrator and courtier in the Household of the Duke of York.

Francis Ernest Joseph Marie Dhanis was a Belgian colonial civil servant and soldier noted for his service for the Congo Free State during the Congo Arab War and Batetela Rebellion.

Émile Francqui was a Belgian soldier, diplomat, business man and philanthropist.

Félix Alexandre Fuchs (1858–1928) was a Belgian colonial civil servant and lawyer who served as Governor-General of the Belgian Congo between 1912 and 1915.

Cyriaque Cyprien Victor Gillain (1857–1931) was a Belgian officer who served in World War I and was chief of the Belgian general staff between April 1918 and February 1920.

Sten Edvard Gleerup, or Edde Gleerup, was a Swedish soldier and explorer. He was the first Swede and eighth European to cross Africa.

Edmond-Winnie-Victor Hanssens was a Belgian soldier and colonial administrator. He did much to establish the Belgian presence on the Upper Congo River in the last two years of his life.

Lieutenant-general Baron Alphonse Jacques de Dixmude, often known as General Jacques, was a Belgian military figure of World War I and colonial advocate.

Willem Frans Van Kerckhoven, or Guillaume François van Kerckhoven was a Belgian soldier, explorer, colonial administrator who was active in the service of the International Association of the Congo and the subsequent Congo Free State. He is known for his extended expedition through the Uele River basin and onward towards the Nile, during which he cleared the Arab slave traders from the region and established a Belgian presence. He died in an accident before reaching the Nile.
Albert Bruno Amédée Lantonnois van Rode was a Belgian Lieutenant General descendant from an aristocratic family. He was Vice-Governor General of the Congo Free State and later commanded a division during World War I.

Paul-Amédée Le Marinel (1858–1912) was an American-born officer in the Belgian army who became an explorer and administrator in the Congo Free State. He was best known for his expedition to Katanga in 1891.
Herman Thomas Marie Ledeganck was a Belgian diplomat and colonial administrator who served as vice governor-general of the Congo Free State from 1888 until 1889. Ledeganck was born in Zomergem the son of a Flemish poet.

Charles Adolphe Marie Liebrechts was a Belgian soldier, explorer and administrator in the Congo Free State.

Joseph François Lippens was a Lieutenant in the Force Publique of the Congo Free State during the Congo Arab War. He was killed by the soldiers of Sefu bin Hamid.

Hubert Joseph Lothaire was a Belgian officer who served in the Force Publique of the Congo Free State. He started his military career as a lieutenant in the Belgian infantry, later he entered service in the Force Publique, where he commanded Congo Free State forces during the Congo Arab war. Lothaire was married to the sister of Francis Dhanis. On 7 May 1894, Captain Francis Dhanis returned to Europe and Lothaire assumed command of the Force Publique in the 'zone arabe' in his stead.
Richard Dorsey Loraine Mohun was an American explorer, diplomat, mineral prospector and mercenary. Mohun worked for the United States government as a commercial agent in Angola and the Congo Free State. During his time as commercial agent, he volunteered to command a unit of Belgian artillery in a campaign to force Arab slavers from the colony.

Georg Vilhelm Pagels, or 'Georges-Guillaume Pagels was a Swedish officer in the service of the International African Association who briefly commanded Équateur Station.

Léon Roget was a Belgian soldier and colonial administrator who was active in the Congo Free State. He was the first commander of the Force Publique, the armed force used to police the colony.

Gustave Henri Ange Hippolyte Rolin-Jaequemyns was a Belgian lawyer, diplomat and Minister of the Interior (1878–1884) as a member of the Unitarian Liberal Party. Together with the Swiss jurist Gustave Moynier, he founded the Institut de Droit International and became its first Honorary President.

Léon Auguste Théophile Rom (1859–1924) was a Belgian soldier and colonial official who became prominent in the administration of the Congo Free State during the late 19th century.

Herzekiah Andrew Shanu was an African photographer noted for his involvement in the campaign against inhumane abuses in the Congo Free State.

Émile Pierre Joseph Storms was a Belgian soldier, explorer, and official for the Congo Free State. He is known for his work between 1882 and 1885 in establishing a European presence in the regions around Lake Tanganyika, during which he supported the White Fathers missionaries and attempted to suppress the East African slave trade.

Louis Pierre Alphonse Valcke was a Belgian soldier and colonial administrator.

Alphonse van Gèle, also written van Gele or Vangele, was a Belgian soldier who served as the Vice-Governor General of the Congo Free State from December 1897 until January 1899. He established the Equator Station, or Station de l’Équateur, today Mbandaka, and concluded a treaty with the powerful Zanzibar trader Tippu Tip at the Stanley Falls station, today Kisangani. He is known for having confirmed that the Uele River was the upper part of the Ubangi River.
Émile Antoine Marie Wangermée (1855–1924) was a Belgian civil servant and vice governor-general of Congo Free State from 11 April 1897 until December 1897.

Arvid Mauritz Wester was a Swedish soldier who was active in the service of the Belgians in the Congo. For almost two years he commanded the remote station at Stanley Falls, where he had to deal with hostile local people and Arabs.