Claus Fasting (29 October 1746 – 25 December 1791) was a Norwegian playwright, literary critic, editor and civil servant.
He was the only child of Fredrik Fasting (1718-69) who was vicar at Nykirken and his wife, Gerhardina von Güllich (1715-70).
In 1826, by royal decree the book collection was transferred to Bergen Cathedral School.
Today a bust of Fasting, made by Ambrosia Tønnesen in 1924, stands outside Bergen Public Library.
It was situated in the neighborhood of Møhlenpris on land previously developed by his great-grandfather Jørgen Thormøhlen, a merchant, shipowner, slave trader, industrialist and entrepreneur.