Siri Hall Arnøy (born 28 November 1978, in Oslo) is a former Norwegian politician for the Socialist Left Party.
She was elected to the Norwegian Parliament from Akershus in 2001, but was not re-elected in 2005. She then served in the position of deputy representative during the term 2005 - 2009.
Arnøy is openly lesbian.[1]
In 2012, she took the PhD at the Norwegian University of Science and Technology with the thesis The Hopeful Hydrogen. Scientists Advocating Their Matter of Concern.[2]