James Van Over was a Starfleet officer who served during the late 24th century.
In 2370, Van Over was named as one of the yard engineers at the Antares Ship Yards who were listed on the dedication plaque of the USS Defiant. (DS9: "The Die is Cast", dedication plaque)
In 2372, he was named as a member of the Systems Management team at San Francisco Fleet Yards, listed on the dedication plaque of the USS Enterprise-E. (Star Trek: First Contact, dedication plaque)
Later that year, he was named as a member of the Tactical Ops team at the Antares Ship Yards who was listed on the dedication plaque of the USS Valiant. (DS9: "Valiant", dedication plaque)
Later, in 2375, he again served as one of the yard engineers during the construction of the USS Sao Paulo, this time while stationed at the Utopia Planitia Ship Yards. (DS9: "The Dogs of War", dedication plaque)