| Date: | March 5–14 |
| Edition: | 26th |
| Prize Money: | $2,200,000 |
| Category: | Super 9 (ATP) Tier I Series (WTA) |
| Surface: | Hard / outdoor |
| Location: | Indian Wells, CA, US |
| Venue: | Indian Wells Tennis Garden |
| Champms: |  Mark Philippoussis[1] |
| Champws: |  Serena Williams |
| Champmd: | Wayne Black / Sandon Stolle[2] |
| Champwd: | Martina Hingis /  Anna Kournikova |
The 1999 Newsweek Champions Cup and the Evert Cup were tennis tournaments played on outdoor hard courts. It was the 26th edition of the Indian Wells Masters and was part of the Super 9 of the 1999 ATP Tour and of Tier I of the 1999 WTA Tour. Both the men's and women's tournaments took place at the Grand Champions Resort in Indian Wells, California in the United States from March 5 through March 14, 1999.
See main article: 1999 Newsweek Champions Cup – Singles. Mark Philippoussis defeated 
Carlos Moyá, 5–7, 6–4, 6–4, 4–6, 6–2
See main article: 1999 Evert Cup – Singles. Serena Williams defeated Steffi Graf, 6–3, 3–6, 7–5
See main article: 1999 Newsweek Champions Cup – Doubles. Wayne Black / Sandon Stolle defeated Ellis Ferreira / Rick Leach, 7–6(7–4), 6–3
See main article: 1999 Evert Cup – Doubles. Martina Hingis / Anna Kournikova defeated Mary Joe Fernández / 
Jana Novotná, 6–2, 6–2
| Country | Player | Rank | Seed |
|---|---|---|---|
| 1 | 1 | ||
| United States | 2 | 2 | |
| United States | Monica Seles | 3 | 3 |
| Czech Republic | 4 | 4 | |
| 7 | 5 | ||
 France | 8 | 6 | |
| 9 | 7 | ||
| France | Nathalie Tauziat | 10 | 8 |
| Russian Federation | 11 | 9 | |
| Patty Schnyder | 12 | 10 | |
 Belgium | Dominique Van Roost | 13 | 11 |
| France | Sandrine Testud | 14 | 12 |
 Romania | Irina Spîrlea | 16 | 13 |
| Spain | Conchita Martínez | 17 | 14 |
 Belarus | Natasha Zvereva | 18 | 15 |
 Austria | Barbara Schett | 19 | 16 |
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:
Alicia Molik Brie Rippner Tatiana Panova
Miho Saeki María Sánchez LorenzoThe following players received entry from the doubles qualifying draw: