Dhalai Union (Bengali: ধলই) is a union of Hathazari Upazila of Chittagong District.
North: Farhadabad Union East: Halda River South: Guman Mardan Union West: Farhadabad Union In 1974 The government declared that it is good village in terms of crimes in Bangladesh.
As of 1991 Bangladesh census, Dhalai union has a population of 29,571 and house units 4872.
This union was declared 100% literate during 1997 by Govt.
Katirhat bazar, Hadurkhill, Monia Pokor, Noea Hat,