Rathera (Raṭherā) is a village in Mainpuri block of Mainpuri district, Uttar Pradesh, India. As of 2011, it had a population of 4,856, in 749 households.

As of 2011, Rathera had a population of 4,856, in 749 households. This population was 53.3% male (2,588) and 46.7% female (2,268). The 0-6 age group numbered 691 (345 male and 346 female), or 14.2% of the total population. 138 residents were members of Scheduled Castes, or 2.8% of the total.

The 1981 census recorded Rathera as having a population of 2,851 people, in 453 households.

The 1961 census recorded Rathera as comprising 1 hamlet, with a total population of 1,750 people (965 male and 785 female), in 296 households and 200 physical houses. The area of the village was given as 368 acres.

As of 2011, Rathera had 1 school teaching at the primary level and 3 schools teaching at the secondary level. The village had a veterinary hospital, although there were not any healthcare facilities for humans. Drinking water was provided by well, hand pump, and tube well; there were no public toilets. The village had a post office and public library; as well as at least some access to electricity for all purposes. Streets were made of both kachcha and pakka materials.