Sir Johannes Hendricus Meiring Beck, FRSE (28 November 1855, Worcester - 15 May 1919, Cape Town) was a Cape and later South African physician and politician.
He was a member of the Cape Colony delegation to the National Convention between 1908 and 1909, which led to the creation of the Union of South Africa, and held various memberships of medical-professional and scholarly bodies in South Africa and the British realm.
He was an early occupier of the office of the Minister of Posts and Telegraphs in South Africa.
Beck was knighted in 1911 for his participation in the National Convention.