The Alexander-von-Humboldt-Gymnasium (English: Alexander von Humboldt Gymnasium) is a Gymnasium in Konstanz, Baden-Württemberg, Germany.

The eponym is Alexander von Humboldt (1769–1859).

Alexander-von-Humboldt-Gymnasium has an annual exchange of pupils with its twin towns Richmond (Great Britain) and Fontainebleau (France).

Pupils of several secondary schools in Konstanz visit every two years the Czech twin town of Tábor.

Every year a three-week stay in Orange County, California in The United States of America is offered.