Theresianum is a name that is used for a number of institutions in several countries, including the following.

Austria:

• Theresianum (or Theresian Academy), a private school in Vienna
• Theresian Military Academy, a military academy in Wiener Neustadt
• A high school in Eisenstadt

Germany:

• A Gymnasium devoted to the humanities in Bamberg
• A state-recognized all-day Gymnasium in Mainz

Romania:

• A large building complex in the suburbs of Hermannstadt that was used in the forced migrations of 1754

Switzerland:

• A high school for girls in Ingenbohl