Rudolf Friedrich Le Maistre (10 February 1835 - 1 April 1903) was a Saxon and Imperial German diplomat.

[1] He was a son of diplomat Johann Friedrich Le Maistre (1790–1874)[2] and Elisabeth Helene Benecke von Gröditzberg (b.

On 5 March 1869, King Frederick William IV appointed the Royal Saxon legation councilor Le Maistre as Minister-Resident of the North German Confederation to the governments of the Argentine Confederation and the Republic of Uruguay.

[4] In 1882, Le Maistre was Emperor William I's Envoy Extraordinary and Minister Plenipotentiary to Empero Pedro II and negotiated a consular treaty with Brazil.

[4] Le Maistre died in Dresden on 1 April 1903 and was buried at Trinity Cemetery there.