The 1998 Guardian Direct Cup was a men's tennis tournament played on indoor carpet courts at the Battersea Park in London, Great Britain, that was part of the Championship Series of the 1998 ATP Tour. It was the 21st edition of the tournament, the first one held in London, England, and was held from 23 February until 1 March 1988. Third-seeded Yevgeny Kafelnikov won the singles title.
See main article: 1998 Guardian Direct Cup – Singles.
Yevgeny Kafelnikov defeated 
Cédric Pioline, 7–5, 6–4See main article: 1998 Guardian Direct Cup – Doubles.
Martin Damm / 
Jim Grabb defeated Yevgeny Kafelnikov / Daniel Vacek, 6–4, 7–5