The 1998 Lone Star 500 was the tenth round of the 1998 Indy Racing League season.

Open-wheel veteran John Paul Jr. earned his first win since the 1983 Michigan 500 in a race determined by attrition and fuel strategy.

Rookie Robby Unser scored his first and only podium as well as led the only laps in his career.

The race saw many crashes and problems plague the usual frontrunners, including Arie Luyendyk (fuel pump), Eddie Cheever (engine malfunction), Scott Sharp (crash), Greg Ray (engine malfunction), and Tony Stewart (led 51 laps before an engine problem ended his race).

By finishing 5th, points leader Kenny Bräck maintained his comfortable lead in the points standings, all but ensuring he would be the next IRL champion in the next race.