Gaston Armel "Disney" Mamouma-Ossila (born January 7, 1980) is a retired Congolese football player. FIFA lists his name as Armel Mamouna-Ossila. Armel began his football career in his native Republic of the Congo with Étoile du Congo, before moving abroad to play professionally in Romania and France. Armel made 50 Liga I appearances, playing for Internaţional Piteşti, Pandurii Târgu Jiu and Farul Constanţa. He made over 50 appearances in Liga II, including loan spells at Internaţional Piteşti and SCM Râmnicu Vâlcea.