Wilhelm Heinrich Ackermann (25 June 1789, Auerbach, Saxony – 27 March 1848, Frankfurt) was a German teacher.
Wilhelm Ackermann learned on the college of Gotha, then beginning in 1807 studied theology in Leipzig.
Asked by his uncle Rudolph Ackermann, a merchant from London, he began in 1811 to teach young Englishmen with whom he stayed for two years with the Swiss pedagogue Johann Heinrich Pestalozzi in Yverdon-les-Bains.
In 1813 he entered the Freikorps of baron Ludwig Adolf Wilhelm von Lützow in an enthusiasm to free his fatherland.
In London, he kept company with the teacher of elocution Alexander Graham Bell, whose rather passive teaching system contrasted with the tenets of Pestalozzi followed by Ackermann.