Lalmohan (Bengali: লালমোহন) is an upazila of Bhola District in the Division of Barisal, Bangladesh.

Lalmohan is located at 22°19′16″N 90°44′50″E / 22.3211°N 90.7472°E / 22.3211; 90.7472. It has a total area of 396.24 km. Postal code: 8330. The upazila is bounded by Burhanuddin and Tazumuddin upazilas on the north, Char Fasson upazila on the south, Manpura upazila on the east, Dashmina and Bauphal upazilas on the west.

The rivers Tentulia, Betua, and Boalia; Debnath Beel, Gatiar and Bhutar Canals, Shahbazpur Channel are notable water bodies here.

Historical population

Year	Pop. (000)	±%
1981	202	—
1991	252	+24.8%
2001	277	+9.9%
2011	284	+2.5%
Source: Bangladesh Bureau of Statistics

As of the 2011 Census of Bangladesh, Lalmohan upazila has a population of 283,889 living in 60,988 households. 78,309 (27.58%) were under 10 years of age. Lalmohan has an average literacy rate of 40.00% (7+ years), compared to the national average of 51.8%, and a sex ratio of 1045 females per 1000 males. 36,066 (12.70%) of the population lives in urban areas.

Lalmohan, primarily formed as a Thana in 1919, was turned into an upazila in 1983.

The Upazila is divided into Lalmohan Municipality and nine union parishads: Badarpur, Charbhuta, Dholigournagar, Farajgonj, Kalma, Lalmohan, Lord Hardinge, Paschim Char Umed, Abu Mucha commandeer Bazar and Ramagonj. The union parishads are subdivided into 53 mauzas and 78 villages.

• Upazilas of Bangladesh
• Districts of Bangladesh
• Divisions of Bangladesh