Mainpuri Lok Sabha constituency (Hindi pronunciation: [mɛːn̪.pʊɾiː]) is one of the 80 Lok Sabha (parliamentary) constituencies in the Indian state of Uttar Pradesh.

Mainpuri constituency comprises five Vidhan Sabha (legislative assembly) segments. These are:

In Mainpuri, 45% of the 1.73 million voters are Yadavs. The other dominant castes are Shakya, Brahmins, Scheduled Castes and Muslims.

^ By-poll

27°13′N 79°02′E / 27.22°N 79.03°E / 27.22; 79.03