Simarpaha is a village in Lalganj block of Rae Bareli district, Uttar Pradesh, India. It is located 3 km southwest of Lalganj on the road to Ralpur on the Ganges. In addition to the main site, the village also includes several dispersed hamlets. Simarpaha was historically the seat of a taluqdari estate held by a branch of the Bais Rajputs. As of 2011, it has a population of 8,391 people, in 1,501 households. It has two primary schools and no healthcare facilities.