Regal Zonophone Records was a Britishrecord label formed in 1932, through a merger of the Regal and Zonophone labels. This followed the merger of those labels' respective parent companies - the Columbia Graphophone Company and the Gramophone Company - to form EMI. At the merger, those records from the Regal Records catalogue were prefixed 'MR' and those from the Zonophone Records catalogue were prefixed 'T'. Record releases after the merger continued using only the 'MR' prefix.
In the 1950s the Australian division of Regal Zonophone played an important role in the emerging Australian country music genre, signing several emerging country stars including Slim Dusty, Smoky Dawson, Reg Lindsay and Chad Morgan. Slim Dusty's 1957 Regal Zonophone hit "A Pub with No Beer" became the biggest-selling Australian recording ever released up to that time.