In 1321, the Herren [Lords] von Reidenbach zu Dune und Stein (Oberstein, now Idar-Oberstein) were given the properties of Weiersbach and Nahbollenbach.
One of the earliest mentions of Mittelreidenbach is found in a deed of sale in 1340, when the Edelknecht (the lowest rank of medieval German nobility) Johann von Oberstein sold the tithes in Reidenbach to the Archbishop of Trier, Baldwin of Luxembourg.
Later, the Reidenbach package went as the dowry of Anna, the daughter of Jost Flersheim, to Emmerich von Dietz, the district officer of St. Wendel.
When the male line of the House of Dietz became extinct in 1616, the village and estate of Reidenbach were annexed as orphaned fiefs by the Archbishopric of Trier and assigned to the district of St. Wendel.
On 23 January 1798, the village was added to the French Empire as part of the Département de la Saar, where it would stay in Birkenfeld's arrondissement [prefecture] until 1814.
However, the changes did not keep Mittelreidenbach from winning several times since 1986 in various classes of the national competition, “Our Village is Beautiful” (German: “Unser Dorf soll schöner werden”).