2000 Gerry Weber Open

{{TennisEventInfo|2000|Gerry Weber Open|

| date=12–18 June

| edition=8th

| category=International Series

| prize_money=$975,000

| draw=32S / 16D

| surface=Grass / outdoor

| location=Halle, Germany

| venue=Gerry Weber Stadion

| champs={{flagicon|GER}} David Prinosil{{cite web |title=2000 Halle – Singles draw |url=https://www.atptour.com/en/scores/archive/halle/500/2000/draws?matchtype=singles |publisher=Association of Tennis Professionals (ATP)}}

| champd={{flagicon|SWE}} Nicklas Kulti / {{flagicon|SWE}} Mikael Tillström{{cite web |title=2000 Halle – Doubles draw |url=https://www.atptour.com/en/scores/archive/halle/500/2000/draws?matchtype=doubles |publisher=Association of Tennis Professionals (ATP)}}

}}

The 2000 Gerry Weber Open was a men's tennis tournament played on grass courts at the Gerry Weber Stadion in Halle, North Rhine-Westphalia in Germany and was part of the International Series of the 2000 ATP Tour. It was the 8th edition of the tournament and was held from 12 June through 18 June 2000. Unseeded David Prinosil, who received a wildcard for the main draw, won the singles title.