The 1978 Hibernia Interfest Tennis Classic, also known as the New Orleans Grand Prix, was a men's tennis tournament played on indoor carpet courts at the Louisiana Superdome in New Orleans, Louisiana in the United States that was part of the 1978 Colgate-Palmolive Grand Prix.

It was the inaugural edition of the tournament and was held from July 31 through August 6, 1978.

First-seeded Roscoe Tanner won the singles title.

[3][4] Roscoe Tanner defeated Victor Amaya 6–3, 7–5 Erik van Dillen / Dick Stockton defeated Ismail El Shafei / Brian Fairlie 7–6, 6–3