A new and distinct Medinilla sp. plant named ‘ROYAL FLAZH’, characterized by a erect to semi-erect plant, measuring about 55-75 cm in total height (when first flowering) and about 75-100 cm in diameter green colored leaves, measuring about 30-35 cm in length and about 10-15 cm in width pendulous panicle, measuring about 25-30 cm in length and about 10-15 cm in diameter, with red-purple (RHS 67B) flowers.