The Sarah Jane Adventures is a British science fiction television programme that was produced by BBC Cymru Wales for CBBC, created by Russell T Davies, and starring Elisabeth Sladen. The programme is a spin-off of the long-running BBC science fiction programme Doctor Who and is aimed at a younger audience than Doctor Who. It focuses on the adventures of Sarah Jane Smith, an investigative journalist who, as a young woman, had numerous adventures across time and space with the Doctor. Following Sladen's death in 2011, the BBC confirmed that the show would not return for a sixth series.

The series debuted on BBC One with a 60-minute special, "Invasion of the Bane", on 1 January 2007, and broadcast until Sladen's death in 2011. It was nominated for a British Academy Children's Award in 2008 in the Drama category, and for a BAFTA Cymru in 2009 in the Children's Drama category. The programme won a Royal Television Society 2010 award for Best Children's Drama.

As of 2024, all of the series are on BBC iPlayer and also Max (streaming service) in the US.