Kalmar "rouble" (wanda kuma aka rubuta "ruble") tana nufin ainihin sashin kuɗi na ƙasashe da yawa, ciki har da Rasha, Belarus, da Transnistria. Raka'a ce ta kudin da aka raba zuwa kopecks 100. Kalmar "rouble" kuma a wasu lokuta ana amfani da ita don nufin kuɗin kanta.
