The “chequy” pattern in the lower field is a reference to the village's former allegiance to the “Further” County of Sponheim. The millstone and the millrind recall the village's beginnings. According to the Reverend Otto Lentze in his book "Amt Naumburg und Pfarrei Becherbach" (p. 31), Otzweiler was in 1599 only an estate with two mills, and had earlier long been only one mill. Municipal council, on 3 February 1966, gave the graphic artist Brust from Kirn-Sulzbach the task of designing a municipal coat of arms. At a council meeting on 8 June 1966, council adopted the design that had been put forth. After consent by the state archive, the Ministry of the Interior in Mainz granted approval for Otzweiler to bear its own arms on 4 July 1966. The municipal banner also bears this coat of arms in the centre.