The 1998 Davis Cup (also known as the 1998 Davis Cup by NEC for sponsorship purposes) was the 87th edition of the Davis Cup, the most important tournament between national teams in men's tennis.

131 teams entered the competition, 16 in the World Group, 30 in the Americas Zone, 30 in the Asia/Oceania Zone, and 55 in the Europe/Africa Zone.

Honduras, Iraq, the Netherlands Antilles, Saint Lucia and the U.S. Virgin Islands made their first appearances in the tournament.

Sweden defeated Italy in the final, held at the Forum di Assago in Milan, Italy, on 4–6 December, to win their second consecutive title and their 7th title overall.

[1][2] Italy vs. Sweden Date: 25–28 September The eight losing teams in the World Group first round ties and eight winners of the Zonal Group I final round ties competed in the World Group qualifying round for spots in the 1999 World Group.