Tadiyawan, also spelled Tandiyawan, is a village and corresponding community development block in Hardoi district of Uttar Pradesh, India.

[1] Located 14 km from the city of Hardoi,[2][3] it hosts a regular market[1] and hosts a Deviji festival on Chaitra Sudi 8 dedicated to worship of the goddess Devi.

[1] The 1961 census recorded Tadiyawan as comprising 4 hamlets, with a total population of 2,078 (1,132 male and 946 female), in 463 households and 378 physical houses.

[4] Average attendance of the Deviji fair was listed as about 600 people at the time.

[4] The 1981 census recorded Tadiyawan as having a population of 2,866, in 563 households, and covering an area of 565.37 hectares.