Sidney Bolsom (c.1879 - 16 October 1947) was a local politician in the St Pancras area. A member of St Pancras Borough Council, he became an alderman and was Mayor of St Pancras in 1932-33. In 1934 he was elected to represent St Pancras North on the London County Council as a member of the Municipal Reform Party. He lost his seat at the next council elections in 1937. He died at his home in Hampstead in 1947, aged 68.