Karatia Union (Bengali: করটিয়া ইউনিয়ন) is a union of Tangail Sadar Upazila, Bangladesh. It is a suburb of Tangail. The town is situated 6.5 kilometres (4.0 mi) away from Tangail city, 92 kilometres (57 mi) northwest of Dhaka city, the capital. It is the headquarters of the Karatia Zamindari family.

According to the 2011 Bangladesh census, Karatia Union had 10,260 households and a population of 46,489. The literacy rate (age 7 and over) was 58.9% (male: 62.5%, female: 55.1%).

Government Saadat College is located in this town. Every day almost 10,000 students come in Karatia to take lessons from different parts of Tangail and other nearby villages.

• Elenga

• "Demolition of illegal structures on Karatia canal begins". The Daily Star. 2015-12-08.