Adhémar Marcel Guillaume Daenen (8 September 1853 – 1 October 1930) was a Belgian soldier and colonial administrator who was active in the Congo Free State.
On 20 July 1887 he was made a judicial police officer, and in 20 January 1888 became deputy judge near the court of first instance of Bas-Congo District.
At the end of his term he left the Bangalas on 13 July 1889 and embarked at Banana on the Afrikaan on 1 September 1889 to return to Europe.
He arrived in Boma on 18 June 1890, was promoted to captain-commander and was assigned to the Nile expedition of Willem Frans Van Kerckhoven.
On 8 July 1891 Daenen left for Djabir on the Uele River with the last loads for the Nile expedition, arriving on 8 August 1891.
[1] The vanguard of the expedition under Pierre Ponthier had begun the march east on 8 July 1891 through uncharted territory along the Uele.
He established relay stations at points on both banks of the river with relatively little opposition from the local people or Arab slavers.
He then left Bima with a convoy of canoes to go up the Bomokandi River and join Ponthier, who was struggling with the Arabs at Makongo.
Daenen, Joshua Henry and Jacobs placed themselves under the orders of Gaspard Edouard Fivé to take part in the Arab campaign in this region.