The 1999 Stockholm Open was an ATP men's tennis tournament played on hard courts and held at the Kungliga tennishallen in Stockholm, Sweden. It was the 31st edition of the event and part of the ATP World Series of the 1999 ATP Tour. The tournament was held from 8 November until 14 November 1999. First-seeded Thomas Enqvist won the singles title.
See main article: 1999 Stockholm Open – Singles. 
Thomas Enqvist defeated Magnus Gustafsson, 6–3, 6–4, 6–2
See main article: 1999 Stockholm Open – Doubles. Piet Norval / Kevin Ullyett defeated 
Jan-Michael Gambill / Scott Humphries, 7–5, 6–3