The 1998 Lipton Championships was a tennis tournament played on outdoor hard courts. It was the 14th edition of the Miami Masters and was part of the Super 9 of the 1998 ATP Tour and of Tier I of the 1998 WTA Tour. Both the men's and the women's events took place at the Tennis Center at Crandon Park in Key Biscayne, Florida in the United States from March 16 through March 29, 1998.

Finals

Men's singles

Marcelo Ríos defeated 🇺🇸 Andre Agassi 7–5, 6–3, 6–4

Women's singles

🇺🇸 Venus Williams defeated 🇷🇺 Anna Kournikova 2–6, 6–4, 6–1

Men's doubles

Ellis Ferreira / 🇺🇸 Rick Leach defeated 🇺🇸 Alex O'Brien / 🇺🇸 Jonathan Stark 6–2, 6–4

Women's doubles

Martina Hingis / 🇨🇿 Jana Novotná defeated 🇪🇸 Arantxa Sánchez-Vicario / 🇧🇾 Natasha Zvereva 6–2, 3–6, 6–3