| Doubles | |
|---|---|
| 1998 Copenhagen Open | |
| Champions |  Tom Kempers Menno Oosting [1] |
| Runners-up |  Brett Steven Jan Siemerink |
| Final score | 6–4, 7–6 |
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 through 15 March 1998.
Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated.
Aleksandar Kitinov / 
Pavel Vízner (first round)
Nicklas Kulti / Mikael Tillström (semifinals) Andrew Kratzmann / 
Andrei Olhovskiy (first round) Tom Kempers / Menno Oosting (champion)| First round | Quarterfinals | Semifinals | Final [1] | ||||||||||||||||||||||||
| W Arthurs P Kilderry | 6 | 3 | 6 | ||||||||||||||||||||||||
| 1 | A Kitinov P Vízner | 3 | 6 | 3 | W Arthurs P Kilderry | 7 | 7 | ||||||||||||||||||||
 K Carlsen F Fetterlein | 7 | 7 | K Carlsen F Fetterlein | 6 | 6 | ||||||||||||||||||||||
 G Van Emburgh T Anzari | 5 | 6 | W Arthurs P Kilderry | 4 | 1 | ||||||||||||||||||||||
| 4 | T Kempers M Oosting | 6 | 7 | 6 | 4 | T Kempers M Oosting | 6 | 6 | |||||||||||||||||||
| T Nijssen L Pimek | 7 | 6 | 4 | 4 | T Kempers M Oosting | 7 | 6 | ||||||||||||||||||||
 J Knippschild D Prinosil | 4 | 6 | 6 | J Knippschild D Prinosil | 6 | 1 | |||||||||||||||||||||
B Coupe  O Rosner | 6 | 3 | 4 | 4 | T Kempers M Oosting | 6 | 7 | ||||||||||||||||||||
 T Ketola T Larkham | 7 | 7 | J Siemerink  B Steven | 4 | 6 | ||||||||||||||||||||||
| M Barnard B Haygarth | 6 | 6 | T Ketola T Larkham | 5 | 6 | 3 | |||||||||||||||||||||
| J Siemerink B Steven | 5 | 6 | 6 | J Siemerink B Steven | 7 | 4 | 6 | ||||||||||||||||||||
| 3 | A Kratzmann A Olhovskiy | 7 | 3 | 3 | J Siemerink B Steven | 6 | 7 | ||||||||||||||||||||
| M Gustafsson T Johansson | 6 | 6 | 2 | N Kulti M Tillström | 3 | 6 | |||||||||||||||||||||
 C Brandi F Messori | 2 | 3 | M Gustafsson J Johansson | 6 | 2 | ||||||||||||||||||||||
| 2 | N Kulti M Tillström | 6 | 6 | 2 | N Kulti M Tillström | 7 | 6 | ||||||||||||||||||||
| J Printzlau J Tribler | 4 | 1 | |||||||||||||||||||||||||
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