Nils Jakob Eberhard Quensel (22 October 1894 – 8 November 1971) was a Swedish lawyer and independent politician.

In 1931 he took up a position as head of legislation issues at the Ministry of Finance, and in 1933 he became the chief civil servant (expeditionschef, the most senior non-political post) at the Ministry of Finance.

In 1936 he was appointed a regular judge (hovrättsråd) of Svea Court of Appeal.

[1] In 1936 he was also appointed minister without portfolio (legal consultant) in the short-lived Pehrsson-Bramstorp Cabinet, on the recommendation of Ernst Wigforss, a position he continued to hold in the Hansson II Cabinet and Hansson III Cabinet from 1936 to 1940.

After his time in the cabinet, Quensel continued as president of the Administrative court of appeal until his retirement in 1961.