HAHmiR.DB is a comprehensive database of high altitude specific differentially expressed human miRNAs. The database contains 401 entries taken on 343 differentially expressed high altitude human miRNAs extracted from peer-reviewed publication. The information in this database includes most general knowledge about each differentially expressed miRNA starting from sequence to maturation end and miRNA IDs. HAHmiR.db database also provides information about high altitude miRNAs role in other diseases, its tissue-specific expression and its pharmacogenetics relation with the drug. User can identify deregulated target networks of each miRNA in the database and subsequently overrepresented Feed-Forward Loops (FFL) in each network can also be identified. Our database also performs integrative analysis with the test miRNAs set given by user and forms directed miRNA-TF coregulatory network of input miRNAs.