| 2003 SEAT Open | |
|---|---|
| Date | 20–26 October |
| Edition | 8th |
| Category | Tier III |
| Draw | 30S / 16D |
| Prize money | $225,000 |
| Surface | Hard / indoor |
| Location | Kockelscheuer, Luxembourg |
| Champions | |
| Singles | |
 Kim Clijsters | |
| Doubles | |
 Maria Sharapova  Tamarine Tanasugarn | |
The 2003 SEAT Open was a women's tennis tournament played on indoor hard courts in Kockelscheuer, Luxembourg which was part of Tier III of the 2003 WTA Tour. It was the 8th edition of the tournament and was held from 20 October until 26 October 2003. First-seeded Kim Clijsters claimed the singles title, marking her third consecutive at the event and fourth in total, and earned $35,000 first-prize money.[1]
Kim Clijsters defeated 
Chanda Rubin, 6–2, 7–5
Maria Sharapova / Tamarine Tanasugarn defeated 
Elena Tatarkova / 
Marlene Weingärtner, 6–1, 6–4
