Ernst Heinrich Ein (28 December 1898 – 16 October 1956) was an Estonian jurist, politician and professor of law.
Between 1928 and 1944, he was a lecturer of law history at the University of Tartu.
In 1932, became an associate professor of private law at the university after receiving his Juris Doctor degree.
In 1933 he was Minister of Justice and Internal Affairs in the government of Jaan Tõnisson.
[1] Following the Soviet re-occupation of Estonia in 1944, Ein fled the country and later settled in the United States.