Public affairs may refer to:
- Public affairs (broadcasting), radio or television programs that focus on matters of politics and public policy
- A broad field encompassing public administration, politics, and advocacy; see outline of public affairs
- Public Affairs Council, an American professional association for people working in public administration and 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 relations as a profession
- Public Affairs Press, a 20th-century publishing house based in Washington, DC
- Public Affairs Quarterly, American philosophy journal
- PublicAffairs, a US publishing company
- Public Affairs Council (disambiguation)
- A Public Affair, a 2006 album by Jessica Simpson
- "A Public Affair" (song), from Simpson's album