Dighi Union () is union parishad under Manikganj Sadar Upazila of Manikganj District, Bangladesh.
Dighi Union is located at . It has a total area of .
According to the 2011 Bangladesh census, Dighi Union had 4,629 households and a population of 20,094.
There are total 4 Haats and Bazars. Besides 8 fairs (Mela) are held in Dighi Union. Tara Bazar, Dautia Bazar, BoT Tola Bazar(Bangla) are famous bazar in Dighi Union.
Dighi Union has 26 rural, The Rural are - Muljan, Vatbaour, Dighi, Bagzan, Romonpur, Gulotia, Susunda, Dayotia, khagrakuri, Rohadoho, Kutai, Chamta, Notun bosti, Bot-tola 29 Mauzas/Mahallas, and 36 villages.
National Highway 5 Dhaka-Bangladesh Highway. N5 (Bangladesh)
Dighi Union has 2 College, 3 Secondary School, 7 Primary School, 1 Bank, 1 Union Health Center, 1 Protibondhi institute, 1 Electricity Institute, 1 Bus Station.
Among the educational institutions.