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 prize money was USD300,000.

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.

Player W L Peter Gade 3 0 Chen Gang 2 1 Rashid Sidek 1 2 Thomas Johansson 0 3

Chen Gang 15–11, 15–11 Rashid Sidek Peter Gade 15–2, 15–10 Thomas Johansson Peter Gade 11–15, 15–11, 15–1 Rashid Sidek Chen Gang 6–15, 17–16, 15–13 Thomas Johansson Peter Gade 15–6, 15–7 Chen Gang Rashid Sidek 15–12, 13–15, 15–5 Thomas Johansson

Player W L Ong Ewe Hock 2 1 Heryanto Arbi 2 1 Luo Yigang 1 2 Kenneth Jonassen 1 2

Ong Ewe Hock 15–10, 15–7 Kenneth Jonassen Heryanto Arbi 3–15, 17–15, 15–7 Luo Yigang Ong Ewe Hock 15–11, 15–2 Heryanto Arbi Kenneth Jonassen 17–15, 9–15, 15–9 Luo Yigang Heryanto Arbi 12–15, 15–8, 15–6 Kenneth Jonassen Luo Yigang 15–4, 15–1 Ong Ewe Hock

Player W L Yong Hock Kin 3 0 Dong Jiong 2 1 Hendrawan 1 2 Jeroen van Djik 0 3

Yong Hock Kin 15–7, 15–3 Jeroen van Djik Dong Jiong 15–11, 15–8 Hendrawan Yong Hock Kin 15–13, 15–8 Dong Jiong Hendrawan 15–1, 15–2 Jeroen van Djik Yong Hock Kin 2–15, 15–13, 15–7 Hendrawan Dong Jiong 15–4, 15–2 Jeroen van Djik

Player W L Sun Jun 3 0 Poul-Erik Høyer Larsen 2 1 Budi Santoso 1 2 Roslin Hashim 0 3

Høyer Larsen 15–10, 15–7 Roslin Hashim Sun Jun 12–15, 15–11, 15–7 Budi Santoso Sun Jun 4–15, 15–3, 15–4 Roslin Hashim Høyer Larsen 12–15, 15–11, 15–6 Budi Santoso Sun Jun 15–8, 15–4 Høyer Larsen Budi Santoso 15–11, 11–15, 15–11 Roslin Hashim

	Semifinals							Final
	Peter Gade		w	/	o
	Ong Ewe Hock
								Peter Gade		11	8
								Sun Jun		15	15
	Yong Hock Kin		12	14
	Sun Jun		15	17

Player W L Ye Zhaoying 2 0 Zhou Mi 1 1 Karolina Ericsson 0 2

Ye Zhaoying 11–3, 5–11, 11–2 Zhou Mi Zhou Mi 11–2, 11–1 Karolina Ericsson Ye Zhaoying 11–1, 11–7 Karolina Ericsson

Player W L Zhang Ning 2 0 Mia Audina 1 1 Mette Pedersen 0 2

Mia Audina 11–4, 11–0 Mette Pedersen Zhang Ning 11–0, 11–5 Mette Pedersen Zhang Ning 11–2, 9–11, 11–3 Mia Audina

Player W L Dai Yun 2 0 Camilla Martin 1 1 Margit Borg 0 2

Camilla Martin 11–13, 11–1, 11–7 Margit Borg Dai Yun 6–11, 11–3, 11–3 Margit Borg Dai Yun 13–11, 11–6 Camilla Martin

Player W L Gong Zhichao 2 0 Kelly Morgan 1 1 Yasuko Mizui 0 2

Gong Zhichao 11–3, 11–5 Kelly Morgan Kelly Morgan 4–11, 11–7, 11–5 Yasuko Mizui Gong Zhichao 11–6, 11–1 Yasuko Mizui

	Semifinals							Final
	Ye Zhaoying		5	11	8
	Zhang Ning		11	8	11
								Zhang Ning		11	11
								Dai Yun		8	7
	Dai Yun		11	11
	Gong Zhichao		0	6

	Semifinals							Final
	Flandy Limpele Eng Hian		11	9
	Tony Gunawan Halim Haryanto		15	15
								Tony Gunawan Halim Haryanto		11	15	11
								Denny Kantono Antonius Budi Ariantho		15	5	15
	Ricky Subagja Rexy Mainaky		15	15
	Denny Kantono Antonius Budi Ariantho		11	12

	Semifinals							Final
	Ge Fei Gu Jun		15	15
	Yang Wei Huang Nanyan		5	4
								Ge Fei Gu Jun		w	/	o
								Marlene Thomsen Rikke Olsen
	Ann Jorgensen Majken Vange		5	8
	Marlene Thomsen Rikke Olsen		15	15

	Semifinals							Final
	Michael Søgaard Rikke Olsen		9	15	11
	Simon Archer Joanne Goode		15	13	15
								Simon Archer Joanne Goode		6	9
								Kim Dong-moon Ra Kyung-min		15	15
	Kim Dong-moon Ra Kyung-min		15	15
	Trikus Heryanto Minarti Timur		7	4

• Smash: World Grand Prix Finals, Bandar Seri Begawan 1998