The 1998 World Grand Prix was a darts tournament organised by the Professional Darts Corporation (PDC) and held at the Casino Rooms in Rochester, England between 14–18 October, 1998.

It also featured the "best of three" legs per set format, rather than five, for the first and only time in the tournament's history.

The "best of three" format was usually associated with BDO events such as the Winmau World Masters.

Phil Taylor took the inaugural title, beating world number one, Rod Harrington in the final.

[2] Players in bold denote match winners.