| Conventional Long Name: | Lakhahi Raj |
| Common Name: | Lakhahi |
| Religion: | Hinduism |
| Status: | Zamindari estate |
| Event End: | Acceded to India |
| S1: | Dominion of India |
| Year Start: | 1461 |
| Year End: | 1947 |
| Flag Border: | no |
| Flag Type: | Flag |
| Capital: | Lakhahi |
| Common Languages: | Awadhi, Hindi |
| Title Leader: | Raja (Ruler or Chief) |
| Year Leader1: | 1636 |
| Leader1: | Raja Kalyan Mal (first) |
| Year Leader2: | 1947 |
| Leader2: | Raja Viswanath Baksh Singh (last) |
| Flag S1: | Flag of India.svg |
| Today: | Uttar Pradesh, Republic of India |
Lakhahi Raj, formerly a Zamindari estate in Oudh, British India, was under the control of the Rathore clan of Rajputs.[1] It now constitutes a segment of the Lakhimpur Kheri district in Uttar Pradesh, India.
Lakhahi was founded in c. 1461 as Usiya (an independent territory). Rao Kalyan Mal was the founder of Lakhahi Raj, who migrated from Jodhpur - Marwar. He conquered local tribals and other territories with the help of his relatives, who were Sonagara Chauhan's (Jhandi, Isanagar, Kafara, Dhauraha, Sujanpur) from the Marwar's region. The total number of conquered villages was 989. The territory was under Banjara rule when Raja Kalyan Mal came here.
Following India's independence on August 15, 1947, the Lakhahi Zamindari estate was integrated into the Dominion of India and later the Republic of India. Raja Vishwanath Baksh Singh was the last ruler of the Lakhahi.[2] After his death on 7 January 1972, his son Raja Dr. Munendra Pal Singh proceeded as incumbent Titular ruler of Lakhahi.
The rulers of Lakhahi bore the title of Raja. The list of rulers is following as:
An enormous temple of Lord Shiva named Shri Janglinath Mahadev temple was founded on the outskirts of Raj by Raja Ram bux Singh of Lakhahi in the early 18th century.[3] [4]