Lucknow Lok Sabha constituency is one of the 80 Lok Sabha (parliamentary) constituencies in Uttar Pradesh state in northern India. It is one of the two lok sabha constituencies that lies in the largest and capital city of the state, Lucknow.

Lucknow is the capital and the largest city of the Indian state of Uttar Pradesh and it is the administrative headquarters of the eponymous district and division. Having a population of 2.8 million as per 2011 census, it is the eleventh most populous city and the twelfth-most populous urban agglomeration of India. Lucknow has always been a multicultural city that flourished as a North Indian cultural and artistic hub, and the seat of power of Nawabs in the 18th and 19th centuries. It continues to be an important centre of governance, administration, education, commerce, aerospace, finance, pharmaceuticals, information technology, design, culture, tourism, music, and poetry.