Tilhar is a city, tehsil and municipal board of Shahjahanpur district in the Indian state of Uttar Pradesh. It is also a constituency of Uttar Pradesh Vidhan Sabha.
Tilhar is the oldest town of present district Shahjahanpur. Due to the supply of bows to the armies of Moghuls, this town was called as "Kamaan Nagar" in ancient India.
Tilhar Assembly constituency is one of the 403 constituencies of the Uttar Pradesh Legislative Assembly, India. It is a part of the Shahjahanpur district and one of the five assembly constituencies in the Shahjahanpur (Lok Sabha constituency). First election in this assembly constituency was held in 1957 after the "DPACO (1956)" (delimitation order) was passed in 1956. After the "Delimitation of Parliamentary and Assembly Constituencies Order" was passed in 2008, the constituency was assigned identification number 133.