Johann Rudolf Engau (28 April 1708 – 18 January 1755) was a German jurist.

Engau was born in Erfurt. He entered the University of Jena in 1726, and earned a doctorate of law from there in 1734. In 1738 he became extraordinary professor at Jena, and in 1740 became full professor as well as assessor for the magistrates' court ( Schöffenstuhl).

In 1743 he was promoted to Institute Professor and assessor for the regional court ( Landgericht); in 1746 became chair of the law faculty; and in 1748 Hofrat. His major publications were compendiums of German private, criminal, and canon law.

Works

• Elementa iuris Germanici civilis (1736; 4th ed. 1752)
• Elementa iuris criminalis Germanico Carolini (1738; 7th ed. with notes by J. A. Hellfeld, 1777)
• Elementa iuris canonico pontificio ecclesiastici (1739; 5th ed. 1765)
• Decisiones et responsa iuris selecta (1761)

References

• Emil Julius Hugo Steffenhagen (1877). "Engau, Johann Rudolf". Allgemeine Deutsche Biographie (in German). Vol. 6. p. 112.