Erasmus Engert was an Austrian painter and art restorer. Later, he became Erasmus Ritter von Engert.

From 1809 to 1823, Engert studied at the Academy of Fine Arts, Vienna, and later made a study trip to Italy. On his return, he set himself up as a painter of portraits, historical scenes and copies of the Old Masters. In 1843, he was named a curator at the Imperial Painting Gallery in Belvedere Palace, where he devoted himself to restoration work.

In 1857, he became the gallery's director, and published what is now considered a very deficient catalog of the collection.

In 1865, Kaiser Franz Joseph I awarded him the title of Ritter (Knight) and entered him into the nobility.