Ballentine is an unincorporated community in Richland County, South Carolina, United States. It is part of the Columbia, South Carolina metropolitan area.
As of the 2020 United States census, there were 8,110 people, 2,495 households, and 1,909 families residing in the CDP.
The community was named after the Ballentine family of pioneer settlers.
In 1925, Ballentine had 50 inhabitants.
There have been unsuccessful attempts to incorporate Ballentine as a town.
The John Jacob Calhoun Koon Farmstead was added to the National Register of Historic Places in 1986.
Public education in Ballentine is administered by Lexington & Richland County School District Five, which operates Ballentine Elementary School in the community.
Ballentine has a public library, a branch of the Richland County Library.