| Tournament Name: | 2003 Regal Scottish Open |
| Venue: | Royal Highland Centre |
| Location: | Edinburgh |
| Country: | Scotland |
| Organisation: | WPBSA |
| Format: | Ranking event |
| Total Prize Fund: | £597,200 |
| Winners Share: | £82,500 |
| Highest Break: | (142) |
| Score: | 9–7 |
| Previous: | 2002 |
| Next: | 2004 |
The 2003 Scottish Open (officially the 2003 Regal Scottish Open) was a professional ranking snooker tournament that took place between 5–13 April 2003 at the Royal Highland Centre in Edinburgh, Scotland. It was the seventh and penultimate ranking event of the 2002/2003 season.
David Gray won his first ranking title by defeating Mark Selby 9–7 in the final. This was Gray's only ranking final victory, and was Selby's first appearance in a ranking final. The defending champion, Stephen Lee, was defeated in the quarter-finals by John Higgins.
This was the final tournament held under the Scottish Open name, being re-branded the following season as the Players Championship before being discontinued.[1] The tournament would be revived under the Scottish Open name in 2016.[2] __TOC__
The breakdown of prize money for this year is shown below:[3] Winner: £82,500
Runner-up: £42,500
Semi-final: £21,250
Quarter-final: £11,700
Last 16: £9,600
Last 32: £7,800
Last 48: £4,000
Last 64: £3,150Last 80: £2,150
Last 96: £1,450
Stage one highest break: £1,800
Stage two highest break: £7,500
Stage one maximum break: £5,000
Stage two maximum break: £20,000
Total: £597,200
| Final: Best of 17 frames. Royal Highland Centre, Edinburgh, Scotland, 13 April 2003. | |||
| David Gray (19) | 9–7 | Mark Selby (53) | |
| Afternoon: 73–32 (65),,,,,,, Evening: 9–102, 24–67,,,,,, | |||
| 65 | Highest break | 60 | |
| 0 | Century breaks | 0 | |
| 3 | 50+ breaks | 1 | |
Best of 9 frames
| 4–5 |  Leo Fernandez | ||
| 1–5 | Colm Gilcreest | ||
| Andrew Higginson | 5–3 | James Reynolds | |
| Jeff Cundy | 5–2 | Jamie Cope | |
| Paul Davison | 5–1 | Ricky Walden | |
| Rory McLeod | 5–2 | Bob Chaperon | |
| Ryan Day | 5–0 | Matthew Selt | |
| 3–5 | Hugh Abernethy | ||
| 3–5 | David John | ||
| Rod Lawler | 5–1 | Manan Chandra | |
| Adrian Gunnell | 5–2 | Jason Weston | |
| w/d–w/o | David Gilbert | ||
| 0–5 | Munraj Pal | ||
| 4–5 | Simon Bedford | ||
| Lee Walker | w/o–w/d | Eddie Manning | |
| 1–5 | Lee Spick |
| Shaun Murphy | 5–2 | Atthasit Mahitthi | |
| 4–5 | Kwan Poomjang | ||
| John Read | 5–1 | Mario Wehrman | |
| Jason Prince | 5–2 | Peter Roscoe | |
| Paul Wykes | 5–1 | Jin Long | |
| Sean Storey | 5–2 | David Donovan | |
 Phaitoon Phonbun | 5–3 | Pang Weiguo | |
| Wayne Brown | 5–2 | Stefan Mazrocis | |
 Kristján Helgason | w/o–w/d | Matthew Farrant | |
| 2–5 | Darren Clarke | ||
| 4–5 | Johl Younger | ||
| Antony Bolsover | 5–3 | Jimmy Robertson | |
| 3–5 | Mark Gray | ||
| Martin Dziewialtowski | 5–4 | David McLellan | |
| 0–5 | Nick Pearce | ||
| Troy Shaw | 5–2 | Justin Astley |