| Death Date: | 12 November 1968 |
| Birth Place: | Belgium |
| Death Place: | Omoshita, Nigeria |
| Allegiance: | BelgiumRepublic of the CongoKingdom of YemenRepublic of Biafra |
| Battles: | Congo CrisisNorth Yemen Civil WarNigerian Civil War |
Marc Goosens (died 12 November 1968) was a Belgian mercenary who fought in the Yemeni Civil War and served in the army of Biafra during the Nigerian Civil War. He was killed by Nigerian forces in Onitsha during Operation Hiroshima.
Goosens served as an officer in the Belgian Army and was a military advisor to the Congolese government during the Congo Crisis.[1] During the civil war in Yemen, he and other Congo veterans trained royalist rebels.[2] He participated in the Nigerian Civil War under the command of fellow mercenary Rolf Steiner, and he was one of the many foreign mercenaries who committed themselves to Biafra, a secessionist country that declared independence from Nigeria.[3] During the unsuccessful attempt led by Welsh mercenary Taffy Williams to retake Onitsha from Nigerian forces, Goosens died after being shot in the liver.[4] Under the title Biafra: Final Mission, Paris Match, a dramatic photo series published by Gilles Caron on November 30, 1968 showed Biafran soldiers carrying the body of Goosens.[5] Goosens is one of the five fallen mercenaries to whom Frederick Forsyth dedicates his novel The Dogs of War.[6] Goosens is said to be the model for the character of the mercenary 'Tiny' Marc Vlaminck in Forsyth's novel.[7]