Accession number

Accession number may refer to:

• Accession number (bioinformatics), a unique identifier given to a biological polymer sequence (DNA, protein) when it is submitted to a sequence database
• Accession number (library science), the unique number given to each new acquisition as it is entered in the catalog of a library or museum
• Accession number, a unique identifier for an order, used in medical information systems like a laboratory information system (LIS)
  • Accession number, also used in a radiology information system (RIS)