Public affairs may refer to:

A broad field encompassing public administration, politics, and advocacy – see outline of public affairs

Public affairs (broadcasting), radio or television programs that focus on matters of politics and public policy

Public affairs (military), offices of the US Department of Defense that deal with the media

Public Affairs (political party), former Czech political party

Public Affairs Council, American professional association for people working in public administration and policy

Public affairs industry

Public relations as a profession

Publishing

PublicAffairs, American publishing company

Public Affairs Press, 20th-century publishing house based in Washington, DC

Public Affairs Quarterly, American philosophy journal