Hjalmar-Johannes Mäe (24 October [O.S. 11 October] 1901, Tuhala, Harjumaa, Estonia, Russian Empire – 10 April 1978, Graz, Austria) was an Estonian politician.
Mäe was twice a candidate to the Riigikogu, in the Estonian parliamentary election, 1929 as a Landlords' Party candidate and in the Estonian parliamentary election, 1932 as a National Centre Party candidate. Later he joined the Vaps Movement. He was the Head of the Directorate of the Estonian Self-Administration, which was subordinate to Reichskommissariat Ostland, during the occupation of Estonia by Nazi Germany.