Elsy Jacobs (4 March 1933 – 28 February 1998) was a Luxembourgish road bicycle racer.
She became the first ever women's Road World Champion when she won the inaugural race on 30 August 1958.
Later the same year she broke the women's hour record on 9 November, riding 41,347 m on the Vigorelli velodrome in Milan; the record stood for 14 years.