2000 Gelsor Open Romania

The 2000 Gelsor Open Romania was a men's tennis tournament played on outdoor clay courts at the Arenele BNR in Bucharest in Romania and was part of the International Series of the 2000 ATP Tour. It was the eighth and final edition of the tournament and was held from 11 September through 17 September 2000. Unseeded Joan Balcells won the singles title.

Seeds

 * 1 Rankings were as of August 28, 2000.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇷🇴 Ionuț Moldovan
 * 🇷🇴 Dinu Pescariu
 * 🇷🇴 Răzvan Sabău

The following players received entry from the qualifying draw:
 * 🇩🇪 Marc-Kevin Goellner
 * 🇩🇪 Jakub Herm-Zahlava
 * 🇩🇪 Michael Kohlmann
 * 🇧🇷 Alexandre Simoni

Seeds

 * Rankings were as of August 28, 2000.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇷🇴 Ionuț Moldovan / 🇷🇴 Dinu Pescariu
 * 🇷🇴 Gabriel Moraru / 🇷🇺 Serguei Novosselov
 * 🇭🇺 Sándor Noszály / 🇷🇴 Răzvan Sabău

Singles
🇪🇸 Joan Balcells defeated 🇩🇪 Markus Hantschk 6–4, 3–6, 7–6(7–1)
 * It was Balcells' only title of the year and also of his career.

Doubles
🇪🇸 Alberto Martín / 🇮🇱 Eyal Ran defeated 🇺🇸 Devin Bowen / 🇦🇷 Mariano Hood 7–6(7–4), 6–1
 * It was Martín's only title of the year and the 3rd of his career (singles and doubles combined). It was Ran's only title of the year and the also of his career.