Porte de Namur (French, pronounced [pɔʁt də namyʁ]) or Naamsepoort (Dutch, pronounced [ˈnaːmsəˌpoːrt]) is a Brussels Metro station on the southern segment of lines 2 and 6.

It is located under the Small Ring (Brussels' inner ring road) at the Square du Bastion/Bolwerksquare, next to the Chaussée d'Ixelles/Elsense Steenweg, in the municipality of Ixelles, south of the City of Brussels, Belgium.

The station takes its name from the Namur Gate area, itself named after the Namur Gate in Brussels' old city walls.

The station opened on 20 December 1970 as a premetro (underground tram) station on the tram line between Madou and Porte de Namur/Naamsepoort.

Then, following the reorganisation of the Brussels Metro on 4 April 2009, it now lies on the joint section of lines 2 and 6.