Rajgarh district is a District of Madhya Pradesh state in central India. The city of Rajgarh is the administrative headquarters of the district.

The district has an area of 6,154 km² and the population is 1,545,814 (2011 census) The district lies on the northern edge of the Malwa plateau, and the Parbati River forms the eastern boundary of the district, while the Kali Sindh River forms the western boundary. The district has seven tehsils, Rajgarh, Khilchipur, Zirapur, Biaora, Narsinghgarh, Sarangpur and Pachore . The district is bounded by Rajasthan state to the north, and by the districts of Guna to the northeast, Bhopal to the east, Sehore to the southeast, and Shajapur to the south and west. It is part of Bhopal Division.

The district was created May 1948, and includes the territory of the former princely states of Rajgarh, Narsinghgarh, Khilchipur, and parts of the states of Dewas Junior and Senior (Sarangpur tehsil) and Indore (Jirapur tehsil, now part of Khilchipur tehsil).

The district takes its name from the headquarters town Rajgarh. Rajgarh District was constituted after the formation of Madhya Bharat in May, 1948. Prior to this the area of the present District was parceled out among the States of Rajgarh, Narsinghgarh, Khilchipur, Dewas (Senior) Dewas (Junior) and Indore. Rajgarh was the headquarters of a mediatised State, ruled by the Umat Rajputs and branch of the great paramara clan, they enjoyed a Sanad Estate under the Sultans of Delhi and Mughal emperors in succession. The first capital was Duparia, now in Shajapur District. Later on it was shifted to Dungarpur (19 km from Rajgarh) and then to Ratanpur (19 km. west of Narsinghgarh) and back. Inorder to avoid disturbance by the frequently passing Mughal armies, the Ruler of the Estate, Mohan Singh, acquired the present side, originally known as Jhanjhanipur from the Bhils in A.D. 1640. Finally he shifted the headquarters in the year 1645, giving the place its present name.

In 2006 the Ministry of Panchayati Raj named Rajgarh one of the country’s 250 most backward districts (out of a total of 640). It is one of the 24 districts in Madhya Pradesh currently receiving funds from the Backward Regions Grant Fund Programme (BRGF).

According to the 2011 census Rajgarh District has a population of 1,545,814, which is more than that of nations like Swaziland or Mauritius This gives it a ranking of 322nd in India (out of a total of 640). The district has a population density of 251 inhabitants per square kilometre (650/sq mi) . Its population growth rate over the decade 2001-2011 was 23.26%. Rajgarh has a sex ratio of 956 females for every 1000 males and a literacy rate of 61.21%.