Updated project metadata. N-Linked glycoprotein is a highly interesting class of proteins for clinical and biological research. The large-scale characterization of N-linked glycoproteins accomplished by mass spectrometry-based glycoproteomics has provided valuable insights into the interdependence of glycoprotein structure and protein function. However, these studies focus mainly on the analysis of specific sample type, and lack integration of each glycoproteomic data from different tissues, body fluids or cell types. In this study, we established N-GlycositeAtlas, a comprehensive database resource of human N-linked glycoproteins and their glycosylation sites identified by mass spectrometry. N-GlycositeAtlas contains more than 30,000 glycosite-containing peptides (representing >14,000 N-glycosylation sites) from more than 7,000 N-glycoproteins from different biological sources including human-derived tissues, body fluids and cell lines from over 100 studies. The entire human N-glycoproteome database as well as 22 sub-databases associated with individual tissues or body fluids can be downloaded from the N-GlycositeAtlas website at nglycositeatlas.biomarkercenter.org.