| Tournament Name: | 2002 Regal Welsh Open |
| Venue: | Cardiff International Arena |
| Location: | Cardiff |
| Country: | Wales |
| Organisation: | WPBSA |
| Format: | Ranking event |
| Total Prize Fund: | £597,200 |
| Winners Share: | £82,500 |
| Highest Break: | (141) |
| Score: | 9–7 |
| Previous: | 2001 |
| Next: | 2003 |
The 2002 Welsh Open (officially the 2002 Regal Welsh Open) was a professional ranking snooker tournament that took place between 23 and 27 January 2002 at the Cardiff International Arena in Cardiff, Wales.
Paul Hunter defeated Ken Doherty 9–7 in the final to win his second ranking title. The final was a repeat of the previous year's tournament in which Ken Doherty defeated Paul Hunter 9–2.
Defending champion Ken Doherty was the number 1 seed with World Champion Ronnie O'Sullivan seeded 2. The remaining places were allocated to players based on the world rankings.
| Final: Best of 17 frames. Referee: Paul Collier. Cardiff International Arena, Cardiff, Wales, 27 January 2002. | |||
| Ken Doherty (1) | 7–9 | Paul Hunter (9) | |
| Afternoon: 115–0 (75), 14–68, 15–72 (72), 29–67, 5–63 (62), 0–141 (141), 65–21 (56), 66–62 (Doherty 59) Evening: 0–89, 68–54 (Hunter 54), 19–68, 89–31 (52), 70–29, 0–68, 87–63, 24–77 (76) | |||
| 75 | Highest break | 141 | |
| 0 | Century breaks | 1 | |
| 4 | 50+ breaks | 5 | |