Lahra Mahuan () is a village in Mainpuri block of Mainpuri district, Uttar Pradesh, India. As of 2011, it had a population of 3,187, in 536 households.
As of 2011, Lahra Mahuan had a population of 3,187, in 536 households. This population was 54.5% male (1,736) and 45.5% female (1,451). The 0-6 age group numbered 463 (233 male and 230 female), or 14.5% of the total population. 1,731 residents were members of Scheduled Castes, or 54.3% of the total.
The 1981 census recorded Lahra Mahuan (as "Lahra Mauwan") as having a population of 1,537 people, in 289 households.
The 1961 census recorded Lahra Mahuan (as "Lehra Mauwan") as comprising 4 hamlets, with a total population of 930 people (524 male and 406 female), in 181 households and 173 physical houses. The area of the village was given as 766 acres.
As of 2011, Lahra Mahuan had 1 primary school; it did not have any healthcare facilities. Drinking water was provided by tap, hand pump, and tube well; there were no public toilets. The village had a post office but no public library; there was at least some access to electricity for all purposes. Streets were made of both kachcha and pakka materials.