Ajmer is a city in Rajasthan, India. Ajmer is the headquarters of the Ajmer district. The city was established as "Ajayameru" by a Chahamana ruler, either Ajayaraja I or Ajayaraja II, and served as their capital until the 12th century CE.

Ajmer is surrounded by the Aravalli Mountains. Ajmer had been a municipality since 1869. Ajmer has been selected as one of the heritage cities for the HRIDAY and Smart City Mission schemes of the Government of India.