Rajajinagara (formerly Rajajinagar), is a residential neighborhood and business hub in the west of Bangalore. It is one of the zones of BBMP. It is bordered by Basaveshwaranagara, Malleshwara, Mahalakshmipura alias West of Chord road second stage, Mahalakshmi Layout, Vijayanagara and Rajajinagara Industrial Suburb. It serves as a centre place to all in Bengaluru.

Inaugurated by Maharaja's of Mysuru Jayachamaraja Wadiyar, Rajajinagara Pillar on 3 July 1949. 70th birthday to C Rajagopalachari.

Named after statesman C. Rajagopalachari, a plaque in the Rajajinagara pillar indicates that 1,000 acres of land given for the locality was divided into industrial and housing areas. The former consisted of 140 acres for textiles, 220 acres for machinery, 100 acres for chemical plants and 40 acres for the food sector. About 4,000 housing plots were created in the remaining 500 acres. Rajajinagara was built at an estimated cost of Rs 50 lakh.

BJP and INC are major players in Rajajinagar area. S. Suresh Kumar is the incumbent and 6 time MLA from Rajaji Nagar Assembly constituency

Year	Member	Party
Until 1977: Constituency did not exist
1978	Mallur Ananda Rao		Janata Party
1983	M. S. Krishnan		Communist Party of India
1985
1989	K. Lakkanna		Indian National Congress
1994	S. Suresh Kumar		Bharatiya Janata Party
1999
2004	N. L. Narendra Babu		Indian National Congress
2008	S. Suresh Kumar		Bharatiya Janata Party
2013
2018
2023