Lise-Meitner-Gymnasium Unterhaching, Secondary school in Unterhaching, Germany.

The Lise-Meitner-Gymnasium Unterhaching occupies a building complex at Jahnstraße 3, grown from the first 14 classrooms opened in September 1974 and the new building inaugurated in November 1975. A 2004–2005 extension added space for an assembly hall and open all-day care. The school teaches a science-technology and a language branch, with a research workshop for pupils known as Lise-Lehrlinge.

The Gymnasium Unterhaching was founded in 1971, initially teaching 144 pupils in four parallel classes in rooms of Volksschule I. The foundation stone for the new building on Jahnstraße was laid in 1973, and the first 14 classrooms opened in September 1974; the building was inaugurated in November 1975. Pupil numbers peaked at 1,537 in 1979. An extension was begun in 2004 and occupied in the 2005/06 school year.

The school bears the name of Austrian-Swedish nuclear physicist Lise Meitner, reflecting the importance of science in its educational identity. This naming choice shapes how the institution presents itself and its focus on scientific learning.

The campus has multiple entrances and good public transport connections, making it easy to reach. It is advisable to check ahead which areas are open to visitors, as it remains an active educational facility.

The school's sports hall, run by the former sports support association SFVGU, was open from 1975 to 2020 to teachers, pupils, parents and alumni for sport outside lessons; in 2015 the club also offered refugees a place to train. The association has since been dissolved.