Helen Oddveig Bjørnøy (born 18 February 1954 in Ålesund, Norway) is a Norwegian Lutheran minister and politician (Socialist Left Party), currently County Governor of Buskerud.
From October 2005 to October 2007, she was Minister of the Environment in the Red-Green Coalition cabinet headed by Jens Stoltenberg.
On 18 October 2007 she was relieved from her duties in the government and replaced by Erik Solheim (Socialist Left Party).