Anton Tobias Friedrich "Fritz" Bühring Jenssen (10 June 1886 – 15 April 1966) was a Norwegian banker and politician for Nasjonal Samling.
He was born in Strinda Municipality as the eighth of ten children of wholesaler and politician Anton Jenssen (1850–1927).
The older brothers Eivind and Erling entered the family company Jenssen & Co, but after Fritz finished his secondary education in 1905 he learned the banking trade in Trondhjem and abroad.
He was hired in Christiania Bank og Kreditkasse in 1912, and after a period as a stock broker from 1915 to 1920 he became board secretary in Kreditkassen.
During the legal purge in Norway after World War II he was convicted of treason and sentenced to ten years of forced labour, but was ultimately released in 1949.