| Tournament Name: | Grand Prix |
| Venue: | Guild Hall |
| Location: | Preston |
| Country: | England |
| Organisation: | WPBSA |
| Format: | Ranking event |
| Total Prize Fund: | £400,000 |
| Winners Share: | £62,000 |
| Highest Break: | (147) |
| Score: | 9–8 |
| Previous: | 1998 |
| Next: | 2000 |
The 1999 Grand Prix was a professional snooker tournament and the second of nine WPBSA ranking events in the 1999/2000 season, following the British Open and preceding the UK Championship. It was held from 11 to 24 October 1999 at the Guild Hall in Preston, England.
Stephen Lee was the defending champion, but he lost his last 32 match against Tony Drago. John Higgins won his 11th ranking title by defeating Mark Williams 9–8 in the final.
Defending champion Stephen Lee was the number 1 seed with World Champion Stephen Hendry seeded 2. The remaining places were allocated to players based on the world rankings.
| Final: Best of 17 frames. Referee: Alan Chamberlain. Guild Hall, Preston, England, 24 October 1999. | |||
| Mark Williams (4) | 8–9 | John Higgins (3) | |
| Afternoon: 1–89 (64), 69–5, 46–77 (55), 83–0 (82), 77–2 (73), 62–30, 53–33, 49–2 Evening: 42–50, 12–68 (68), 0–86 (53), 0–78 (78), 37–59, 88–24 (65), 65–1, 23–107 (66), 0–75 | |||
| 82 | Highest break | 78 | |
| 0 | Century breaks | 0 | |
| 3 | 50+ breaks | 6 | |
Round of 128 Best of 9 frames
Phaitoon Phonbun 5–3 Richard King
Nick Dyson 5–0 Shokat Ali 
Mario Geudens 5–4 Steve Judd
Mark Selby 5–2 Stephen O'Connor 
Wayne Jones 5–3 Wayne Brown
Willie Thorne 5–4 James Reynolds
Anthony Davies 5–1 Gareth Chilcott
Round of 96 Best of 9 frames
Gerard Greene 5–2 Phaitoon Phonbun
Paul Wykes 5–2 Robin Hull 
Neal Foulds 5–2 Patrick Delsemme
Mick Price 5–2 Craig Harrison
Marcus Campbell 5–1 Lee Richardson
Leo Fernandez w/o–w/d Alain Robidoux 
