RESEARCH GLOSSARY

What Is a DOI?

Glossary entry · 1 min read · Last updated 2026-10-31

A DOI (Digital Object Identifier) is a unique, persistent code assigned to a published item, such as a journal article, that links to its current web location even if the web address changes. DOIs begin with "10." followed by a publisher prefix, a slash and a suffix.

Example

Illustrative format only (not a real article): 10.1234/example.2026.001. Adding it after https://doi.org/ takes you to the article's landing page. Many journals ask authors to include DOIs in reference lists, and a DOI helps readers find the exact article you cite.

Common misunderstanding

A DOI does not show that a paper is peer reviewed, accurate or from a good journal; it only identifies and locates a record. Preprints, datasets and even low-quality outputs can have DOIs.

Learn more

See how DOIs are used in academic CVs and reference lists in How to List Publications on an Academic CV.

References and further reading

  1. International DOI Foundation. What is a DOI? Link

Related reading

This page is general educational information about research methods. It is not medical, legal or regulatory advice; follow your institution's ethics board and your target journal's instructions.