The Centre de données astronomiques de Strasbourg (CDS; English translation: Strasbourg Astronomical Data Center) is a data hub which collects and distributes astronomical information. It was established in 1972 under the name Centre de Données Stellaires. The on-line services currently provided by the CDS include:

• SIMBAD, a database of astronomical objects.
• VizieR, an astronomical catalogue service.
• Aladin, an interactive sky atlas.