The 1998 World Badminton Grand Prix was the 16th edition of the World Badminton Grand Prix finals. It was held in Bandar Seri Begawan, Brunei from February 24 to February 28, 1999. It did not take place in December as in the years before due to the collision with the 1998 Asian Games in Bangkok, Thailand.
The players were qualified according to the ranking on 1 December 1998. In men's singles the first 16 players were qualified, in women's singles the first 12 and in the doubles the first eight. Margit Borg, the number 13 in the women's singles rank, could participate because the Susi Susanti was pregnant.
The prize money was USD300,000.