The 1998 Sparkassen Cup singles was the tennis singles event of the ninth edition of the Sparkassen Cup; a WTA Tier II tournament held in Leipzig, Germany.

Jana Novotná was the defending champion but chose not to compete this year.

Steffi Graf won the title, defeating Nathalie Tauziat in the final, 6–3, 6–4. This title would be Graf's last in her native Germany before retiring in 1999.

The top four seeds received a bye to the second round.

	Semifinals							Final
	WC	Steffi Graf	6	3	6
	3	Dominique Van Roost	1	6	0
								WC	Steffi Graf	6	6
								2	Nathalie Tauziat	3	4
	4	Irina Spîrlea	6	3	2
	2	Nathalie Tauziat	2	6	6

	First round							Second round							Quarterfinals							Semifinals
								1	A Sánchez-Vicario	1	6	2
	Q	A-G Sidot	6	6				Q	A-G Sidot	6	4	6
		A Mauresmo	3	3											Q	A-G Sidot	5	3
	WC	S Graf	6	6											WC	S Graf	7	6
		R Dragomir	3	3				WC	S Graf	6	6
	WC	S Klösel	4	3				6	A Sugiyama	4	3
	6	A Sugiyama	6	6																		WC	S Graf	6	3	6
																						3	D Van Roost	1	6	0
								3	D Van Roost	6	6
		I Majoli	6	6					I Majoli	4	4
		C Black	4	1											3	D Van Roost	6	3	6
	Q	S Plischke	6	6											7	N Zvereva	3	6	2
		C Morariu	2	2				Q	S Plischke	1	7	4
		H Nagyová	5	3				7	N Zvereva	6	6	6
	7	N Zvereva	7	6

	First round							Second round							Quarterfinals							Semifinals
	5	A Coetzer	6	4	6
	Q	E Tatarkova	4	6	4			5	A Coetzer	3	6
	WC	B Rittner	3	4					S Pitkowski	6	7
		S Pitkowski	6	6												S Pitkowski	1	1
		M Serna	6	6											4	I Spîrlea	6	6
	Q	R Grande	2	1					M Serna	6	3
								4	I Spîrlea	7	6
																						4	I Spîrlea	6	3	2
	8	A Huber	6	6																		2	N Tauziat	2	6	6
		S Farina	4	2				8	A Huber	6	6
		A Fusai	1	2					B Schett	3	3
		B Schett	6	6											8	A Huber	3	4
		E Likhovtseva	6	7											2	N Tauziat	6	6
		S Appelmans	1	5					E Likhovtseva	6	1
								2	N Tauziat	7	6

• 1998 Sparkassen Cup draw