Gosainganj, also spelled Goshainganj or Gosaiganj is a town and nagar panchayat in Lucknow district of Uttar Pradesh, India.

[3] At that time, the Nawabi cavalry commander Raja Himmat Singh Goshain received the pargana of Amethi as a jagir, and he built a fort and market here, on the site of an abandoned Bhar village.

[3] After Shuja-ud-Daula was defeated in the Battle of Buxar in 1764, Himmat Singh Goshain denied him access to the fort, but after Nawabi control was restored, the raja decided that it would be prudent to leave Awadh, and he went back to his hometown of Haridwar where he received a small jagir.

[3] However, Gosainganj's mercantile importance had been on a steady decline since the late 1800s due to rail transport attracting more and more commercial activity.

[3] Two major fairs were held in the city: one in honor of Devi Chaturbhuji during the month of Chait, and another on Dussehra, with each drawing crowds of about 5,000.