Mayo College is a boys-only private boarding school in Ajmer, Rajasthan, India. It was founded in 1875 by the 6th Earl of Mayo, who was the Viceroy of India from 1869 to 1872, making it one of the oldest public boarding schools in India.

Ajmer is one of the major and oldest cities in the Indian state of Rajasthan and the centre of the eponymous Ajmer District. It is located at the centre of Rajasthan. It is also known as heart of Rajasthan. 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.