| 1999 SEAT Open Luxembourg | |
|---|---|
| Date | 20–26 September |
| Edition | 4th |
| Category | Tier III |
| Draw | 30S / 16D |
| Prize money | $180,000 |
| Surface | Carpet / indoor |
| Venue | Kockelscheuer, Luxembourg |
| Champions | |
| Singles | |
 Kim Clijsters | |
| Doubles | |
 Irina Spîrlea /  Caroline Vis | |
The 1999 SEAT Open was a women's tennis tournament played on indoor carpet courts in Kockelscheuer, Luxembourg which was part of Tier III of the 1999 WTA Tour.[1] It was the fourth edition of the tournament and was held from 20 September until 26 September 1999. Qualifier Kim Clijsters won the singles title and earned $27,000 first-prize money.
Kim Clijsters defeated Dominique Van Roost, 6–2, 6–2
Irina Spîrlea / Caroline Vis defeated 
Tina Križan / Katarina Srebotnik, 6–1, 6–2
| Country | Player | Rank | Seed |
|---|---|---|---|
 USA
|
Serena Williams | 4 | 1 |
| BEL
|
Dominique Van Roost | 13 | 2 |
 CZE
|
Jana Novotná | 18 | 3 |
| ROU
|
Irina Spîrlea | 19 | 4 |
 GER
|
Anke Huber | 20 | 5 |
 ITA
|
Silvia Farina Elia | 26 | 6 |
 AUT
|
Sylvia Plischke | 29 | 7 |
 LUX
|
Anne Kremer | 32 | 8 |
The following players received wildcards into the singles main draw:
The following players received wildcards into the doubles main draw:
The following players received entry from the singles qualifying draw:
The following players received entry as lucky losers:
