Kalia Union (Bengali: কালিয়া ইউনিয়ন) is a union of Sakhipur Upazila, Tangail District, Bangladesh.

It is situated 51 kilometres (32 mi) east of Tangail, the district headquarters.

According to the 2011 Bangladesh census, Kalia Union had 13,137 households and a population of 53,134.

The literacy rate (age 7 and over) was 37.9% (male: 40.4%, female: 35.7%).

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