Rai Sahib / Rao Saheb / Roy Sahib / Rao Sahib abbreviated R.S., was a title of honour issued during the era of British rule in India to individuals who performed faithful service or acts of public welfare to the nation. From 1911 the title was accompanied by a special Title Badge. Translated, Rai means "King" Sahib means "Leader". Awarded during the reign of George VI. For another image of the badge see link This was the start level title usually awarded to civilians, which could later be upgraded to Rao Bahadur and then to Dewan Bahadur titles.

Title Badges were presented to Indian citizens who received certain formal titles of honour during British rule in India. They ceased to be awarded in 1947 on Indian independence.