The 1998 Copenhagen Open was a men's tennis tournament played on indoor carpet courts in Copenhagen, Denmark that was part of the International Series of the 1998 ATP Tour. It was the eleventh edition of the tournament and was held from 9 March until 15 March 1998. Magnus Gustafsson won the singles title.
See main article: 1998 Copenhagen Open – Singles. Magnus Gustafsson defeated David Prinosil, 3–6, 6–1, 6–1.
See main article: 1998 Copenhagen Open – Doubles. Tom Kempers / Menno Oosting defeated Brett Steven / Jan Siemerink, 6–4, 7–6.