1999 Copenhagen Open – Singles

The 1999 Croatian Indoors was a men's tennis tournament played on indoor carpet courts in Copenhagen, Denmark, that was part of the International Series of the 1999 ATP Tour. It was the twelfth edition of the tournament and was held from 2 February until 9 February 1998.

Seeds
Champion seeds are indicated in bold text while text in italics indicates the round in which those seeds were eliminated. • #🇨🇭 Marc Rosset (second round)

• #🇿🇼 Byron Black (semifinals)

• #🇸🇪 Magnus Gustafsson (champion)

• #🇫🇷 Fabrice Santoro (final)

• #Unknown (withdrew)

• #🇮🇹 Davide Sanguinetti (second round)

• #🇩🇪 David Prinosil (first round)

• #🇮🇹 Gianluca Pozzi (second round)