Lakhanmau () is a village in Barnahal block of Mainpuri district, Uttar Pradesh, India. As of 2011, it has a population of 4,207, in 733 households.
As of 2011, Lakhanmau had a population of 4,207, residing in 733 households. This population was 53.4% male (2,255) and 46.4% female (1,952). The 0-6 age group numbered 658 (356 male and 302 female), or 15.6% of the total population. 1,237 residents were members of Scheduled Castes, or 29.4% of the total.
The 1961 census recorded Lakhanmau as comprising 6 hamlets, with a total population of 1,799 people (849 male and 950 female), in 349 households and 239 physical houses. The area of the village was given as 1,299 acres.
As of 2011, Lakhanmau had one primary school and one primary health centre. Drinking water was supplied via hand pump and tube wells but there were no public toilets. The village had a post office and public library; there was at least some access to electricity for all purposes. The streets were made of both kachcha and pakka materials.