Lillian is an unincorporated community in Johnson County, Texas, United States.

It is located along Farm to Market Road 2738, approximately 15 miles (24 km) northeast of Cleburne.

Lillian Elementary School, which serves students in grades pre-kindergarten through four, is located in the community.

The Lillian Independent School District consolidated into Alvarado ISD on July 1, 1986.

[3] The climate in this area is characterized by hot, humid summers and generally mild to cool winters.