The paper “Industrial innovation collaboration in a capital region context” by Sverre J. Herstad, Øyvind Pålshaugen and myself is accepted for publication with the Journal of the Knowledge Economy. In this paper we investigate the relationship between capital region location, and the firm level decision to engage in collaboration for innovation. We find that firm location in the capital region is associated with a slightly lower propensity to engage in innovation collaboration within the region, and a distinctively lower propensity to engage in domestic collaboration as a whole. By contrast, we find no substantial differences between firms in the capital and other Norwegian regions with respect to foreign innovation collaboration, or with respect to innovation activity in general. This means that firms in the capital exchange knowledge among each other by other means than collaboration. They draw comparatively less of their innovation input from the collaboration networks which define the national innovation system as a whole.