Preparatory Institute for Engineering Nabeul [1] (المعهد التحضيري للدراسات الهندسية بنابل) or IPEIN is a Tunisian university establishment founded in 1986 according to the law N°86-954.

It is the first preparatory engineering institute in Tunisia.It is located in Mrezka, Nabeul.

The main mission of the institute is to provide a two-year curriculum of intense mathematics, physics and industrial science courses to prepare students for the national engineering selective exams, or commonly known in French as concours nationaux d'entrée aux cycles de formation d'ingénieurs.

Success in the exams is determined by a score-based ranking system limited by a national quota.

Notable schools will generally require a very good rank (300 and below).