Jacob Rasch (né Michelsen; 27 December 1669 – 1 October 1737) was a Norwegian educator.

He was born in Ogna to district stipendiary magistrate (sorenskriver) Michel Gundersen and Sophie Jacobsdatter Rasch.

He was an uncle of songwriter Michael Heiberg, son-in-law of bishop Bartholomæus Deichman, and grandfather of Maren Juel and Jacob Juel.

He served as rector of Christiania Cathedral School from 1706 to 1737.

This biographical article about a Norwegian academic is a stub.