Rai Bahadur (also Rao Bahadur in South India), abbreviated R.B., was a title of honour bestowed during British rule in India to individuals for their service to the Empire. The title was accompanied by a medal called a Title Badge. Translated, Rao means "prince", and Bahadur means "brave" or "most honourable". The equivalent title for Muslim and Parsi subjects was Khan Bahadur. For Sikhs it was Sardar Bahadur.
Those awarded the Rai Sahib title were usually elevated to the next rank, that of Rao Bahadur, which was in turn below the rank of Dewan Bahadur. These titles were subordinate to the two orders of knighthood, being: the lesser Order of the Indian Empire and the higher Order of the Star of India. A holder of a Rai Sahib, Rai Bahadur or Diwan Bahadur title came lower in the order of precedence.
Some people awarded the Rao Bahadur title
- P. I. Chinnaswamy Pillai, first Municipal Chairman (in 1893) of Palakkad, Kerala.
- Gubbi Thotadappa, Doner, RBDGTC Trust Founder (in 1903) of Bengaluru, Karnataka.
- A. Veeriya Vandayar, zamindar, founder of the Sri Pushpam College (now A. Veeriya Vandayar Memorial Sri Pushpam College) at Thanjavur, Tamil Nadu.
- Arcot Narrainsawmy Mudaliar, philanthropist, charity founder and social reformer.
- Rettamalai Srinivasan, revolutionary and Dalit politician.
- Kurma Venkata Reddy Naidu, Chief Minister of Madras Presidency in 1937, lawyer, professor and politician.
- A. T. Pannirselvam, attorney and leader of the Justice Party.
- Janakinath Bose, lawyer and advocate, father of the independence leader Subhas Chandra Bose.
- Mohan Singh Oberoi, hotelier, founder of Oberoi Hotels & Resorts.
- Puttana Venkatramana Raju, civil engineer noted for his contributions to hydraulics engineering and engineering education.
- Gujarmal Modi, industrialist, co-founder of the Modi Group
- Kandukuri Veeresalingam, social reformer and scholar regarded as the 'father of the Telugu Renaissance movement', from Andhra Pradesh.
- Narayan Meghaji Lokhande, labour movement pioneer and social reformer, founder of the Bombay Mill Hands' Association, from Thane, Maharashtra.
- Arcot Dhanakoti Mudaliar, philanthropist and zamindar, member of the executive council of the Victoria Technical Institute.
- Rajendranath Dutt, judge, Bengal
- Babu Ram Sadan Bhattacharji, deputy magistrate, Bengal
- Babu Bahadur Singh, honorary magistrate, Pilibhit
- Sahu Parsotam Saran Kothiwala, member of the district board, Moradabad
- Soti Raghubans Lal, subordinate judge, Shahjehanpur
- Sadh Achraj Lal, honorary magistrate and member of the municipal board, Mirzapur
- Babu Shuhrat Singh, Zemindar of Chandpur and honorary magistrate, Basti
- Balkishen Kaul, surgeon, lecturer, and superintendent of Lahore Medical college
- Priya Nath Dutt, assistant registrar, Punjab University
- Lada Damodar Das, extrajudicial assistant commissioner in the Punjab
- Lala Jai Lal, member of the Municipal Committee, Simla
- Jwala Prasad, government pleader
- Babu Nalini Kanta Ray, Dastidar of Assam
- Betharam Sarma, sub-deputy collector, Tezpur, Assam
- Dewan Jaggatnath, secretary to the municipal committee and district board, Dera Ismail Khan
- Seth Sarupchand Hukamchand, merchant, Indore
- Manik Lal Joshi, chief minister of Bundi, Rajputana
- Akshey Kumar Sarkar, superintendent, Department of Commerce and Industry, Government of India
- T.V. Siva Rao Pantulu Garu, Chicacole.
- Professor G. N. Rangaswamy Ayyangar, agricultural scientist.
- Jalan, Aditya (2009). "Dewan Bahadur 1944–1954". Quila House and the Jalan Collection: A Brief Introduction. Retrieved 29 July 2018.
- Gubbi Thotadappa
- Vandayar, Veeriya (September 19, 2009). "Rao Bahadur A.Veeriya Vandayar death anniversary". The Hindu.
- Vandayar (October 1, 2014). "Vandayar -Poondi Zamindari family". Deccan chronicle.
- The Indian biographical dictionary, by C. Hayavando Rao, 1915 (page 26)
- The Indian biographical dictionary, by C. Hayavando Rao, 1915 (page 27)
- Imperial Gazetteer of India, v. 10, p.218..
- "INSA :: Deceased Fellow Detail". www.insaindia.res.in. Retrieved 2019-03-04.