Alokdia Union () is a union of Madhupur Upazila, Tangail District, Bangladesh. It is situated 7 km south of Madhupur and 53 km northeast of Tangail.
According to Population Census 2011 performed by Bangladesh Bureau of Statistics, The total population of Alokdia union is 34588. There are 8969 households in total.
The literacy rate of Alokdia Union is 37.3% (Male-38.9%, Female-35.7%).
There are three high schools in the union: Ahammed Ali Memorial High School, Alokdia High School, and Kalamajhi Girl's High School.