Søren Tobias Årstad (2 June 1861 – 11 January 1928) was a Norwegian jurist and politician for the Liberal Party.

After some time as junior solicitor in Risør he settled as an attorney in Stavanger in 1885.

He was elected to the city council, and served as Mayor of Stavanger from 1891 to 1892.

[1] He was elected to the Parliament of Norway from Stavanger og Haugesund in 1897, serving until 1900.

[1] The street Søren Årstads vei in the borough of Hillevåg, Stavanger, was named after him in 1954.