The 1998 Fed Cup was the 36th edition of the most important competition between national teams in women's tennis.
The four losing teams in the World Group first round ties (Belgium, Czech Republic, Germany and Netherlands), and four winners of the World Group II ties (Croatia, Italy, Russia and Slovakia) entered the draw for the World Group play-offs.
Date: 25–26 July The World Group II was the second highest level of Fed Cup competition in 1998.
Date: 18–19 April The four losing teams from World Group II (Argentina, Australia, Austria and Japan) played off against qualifiers from Zonal Group I.
Date: 12–13 July Venue: Tennis Academy, Brasília, Brazil (outdoor clay) Dates: 14–17 April Venue: Chipinque Racquet Club, Monterrey, Mexico (outdoor clay) Dates: 27 April – 3 May Venue: Thana City Golf Club, Samutpakarn, Thailand (outdoor hard) Dates: 16–20 February Venue: Thana City Golf Club, Samutpakarn, Thailand (outdoor hard) Dates: 16–20 February Venue: La Manga Club, Murcia, Spain (outdoor clay) Dates: 14–18 April Venue: Ali Bey Club, Manavgat, Turkey (outdoor clay) Dates: 5–9 May