Waveney may refer to:

• River Waveney, a river that forms the boundary between Suffolk and Norfolk, England
• Waveney District, a local government district in Suffolk, England
• Waveney (UK Parliament constituency)
• Waveney class lifeboat, a class of lifeboat operated by the Royal National Lifeboat Institution between 1964 and 1999
• HMS Waveney (1903), a River-class destroyer
• Waveney Valley Line, a branch line running from Tivetshall in Norfolk to Beccles in Suffolk
• Robert Adair, 1st Baron Waveney 1811–1886 British Liberal Party politician