The 1990 Newsweek Champions Cup and the Virginia Slims of Indian Wells Cup were tennis tournaments played on outdoor hard courts. It was the 15th edition of the tournament, and was part of the ATP Super 9 of the 1990 ATP Tour, and of the Tier II Series of the 1990 WTA Tour. It was held from March 6 to March 20, 1990.
The men's singles draw was headlined by Boris Becker and Stefan Edberg. Other top seeds were Brad Gilbert, Aaron Krickstein, and Andre Agassi.
The women's singles draw featured Martina Navratilova and Conchita Martínez. Other top seeds present were Helena Suková, Jana Novotná, and Katerina Maleeva.
Stefan Edberg defeated Andre Agassi, 6–4, 5–7, 7–6, 7–6
- It was Stefan Edberg's 1st title of the year and his 22nd overall. It was his 1st Masters title.
Martina Navratilova defeated Helena Suková, 6–2, 5–7, 6–1,
- It was Martina Navratilova's 3rd title of the year and the 149th of her career.
Boris Becker / Guy Forget defeated Jim Grabb / Patrick McEnroe, 4–6, 6–4, 6–3
Jana Novotná / Helena Suková defeated Gigi Fernández / Martina Navratilova, 6–2, 7–6(8–6)