Doubles
1998 Guardian Direct Cup
Final
Champions	Martin Damm Jim Grabb[1]
Runners-up	Yevgeny Kafelnikov Daniel Vacek
Score	6–4, 7–5
Events
Singles Doubles
← 1997 · Milan Indoor · 1999 →

The 1998 Guardian Direct Cup was a men's tennis tournament played on indoor carpet courts in London, Great Britain, that was part of the ATP Championship Series of the 1998 ATP Tour. It was the 21st edition of the tournament and was held 23 February – 1 March.

Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.

	First round							Quarterfinals							Semifinals							Final[1]
	1	Y Kafelnikov D Vacek	6	6
		W Ferreira A Richardson	4	4				1	Y Kafelnikov D Vacek	6	6
		G Ivanišević I Ljubičić	2	6	7				G Ivanišević I Ljubičić	1	4
		A Kratzmann F Wibier	6	3	5										1	Y Kafelnikov D Vacek	6	3	6
		J Eagle A Florent	4	6	6											J Eagle A Florent	4	6	2
	4	N Broad P Norval	6	2	3				J Eagle A Florent	6	6	7
		T Kempers M Oosting	6	3	7				T Kempers M Oosting	7	4	6
		M-K Goellner M Tillström	3	6	6																	1	Y Kafelnikov D Vacek	4	5
		A Kitinov P Vízner	1	7	7																	3	M Damm J Grabb	6	7
		P Albano P Nyborg	6	6	6				A Kitinov P Vízner	3	5
	3	M Damm J Grabb	7	7				3	M Damm J Grabb	6	7
		T Henman M Rosset	5	6											3	M Damm J Grabb	6	7	6
		D Adams L Pimek	6	6											2	P Galbraith B Steven	7	5	3
		M Barnard B Talbot	1	4					D Adams L Pimek	2	4
	2	P Galbraith B Steven	6	7				2	P Galbraith B Steven	6	6
		T Carbonell F Roig	1	6