Publius: The Journal of Federalism is a quarterly social science journal published by Oxford University Press on behalf of CSF: Publius, Inc., a non-profit affiliate of the Center for the Study of Federalism.

Its title is in honor of Alexander Hamilton, John Jay, and James Madison, who used the pen-name "Publius" in 1787–1788 when they published the papers that became known as The Federalist.

The journal is sponsored by the Federalism and Intergovernmental Relations Section of the American Political Science Association.

[1] The editors of the journal have been Daniel J. Elazar (1971–1999), John Kincaid (1981–2006), Carol S. Weissert (2006–2014), John Dinan (2014–2023), and the team of Paul Nolette and Philip Rocco (2024–present).

[2] It is covered by indexing and abstracting services including the Social Sciences Citation Index, Historical Abstracts, and PAIS International.