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.
| Country | Player | Rank | Seed | |
|---|---|---|---|---|
 United States | Serena Williams | 4 | 1 | |
 Belgium | Dominique Van Roost | 13 | 2 | |
 Czech Republic | Jana Novotná | 18 | 3 | |
 Romania | Irina Spîrlea | 19 | 4 | |
| Anke Huber | 20 | 5 | ||
 Italy | Silvia Farina Elia | 26 | 6 | |
 Austria | Sylvia Plischke | 29 | 7 | |
 Luxembourg | Anne Kremer | 32 | 8 |
The following players received wildcards into the singles main draw:
The following players received wildcards into the doubles main draw:
Claudine Schaul / Fabienne ThillThe following players received entry from the singles qualifying draw:
The following players received entry as lucky losers:
See main article: 1999 SEAT Open Luxembourg – Singles. Kim Clijsters defeated Dominique Van Roost, 6–2, 6–2
See main article: 1999 SEAT Open Luxembourg – Doubles. Irina Spîrlea / Caroline Vis defeated Tina Križan / Katarina Srebotnik, 6–1, 6–2
