J. Van Over was a Human Starfleet officer in the 22nd century.

In 2151, Van Over was listed as a Flight Software officer on the dedication plaque of Enterprise NX-01. (ENT: "Broken Bow", dedication plaque)

In 2154, Van Over was listed as a Spaceframe Engineering officer on the dedication plaque of the Columbia NX-02. (ENT: "Affliction", dedication plaque)

In January 2155, Van Over was listed as a PAO officer on the directory placards at Starfleet Command's Fleet Operations Center, Sol Sector. Van Over's office was located in room #1211. (ENT: "Demons", directories)