Vanndale, Arkansas (formerly Oak Grove) is an unincorporated community in Searcy Township, Cross County, Arkansas, United States. Vanndale was the county seat of Cross County from 1886 until 1903, when it was moved to the booming railroad town of Wynne. The community was named for John W. Vann, postmaster. Vanndale was formerly on Highway 1, but has now been bypassed and is on Highway 1B.
Public education for elementary and secondary students is provided by the Cross County School District, which leads to graduation from Cross County High School. The district's mascot and athletic emblem is the Thunderbird.