The École nationale supérieure d'informatique pour l'industrie et l'entreprise (French pronunciation: [ekɔl nɑsjɔnal sypeʁjœʁ dɛ̃fɔʁmatik puʁ lɛ̃dystʁi e lɑ̃tʁəpʁiz]; transl.

ENSIIE), formerly known as Institut d'informatique d'entreprise ([ɛ̃stity dɛ̃fɔʁmatik dɑ̃tʁəpʁiz]), is a French public grande école specialising in computer science and applied mathematics.

Students can be admitted to ENSIIE through the selective Concours Mines-Télécom examination, after a strong competition during two years of undergraduate studies in classes préparatoires aux grandes écoles.

The ENSIIE also offers a dual education system, where students enrolled, generally admitted through IUT and parallel admissions, alternate between working in a company and attending school, on the basis of 2/3 days a week for each of those activities.

In addition to these two trainings, the ENSIIE offers a Continuing education path for more experienced professionals (over 3 years of experience in IT and also holding a degree) who want to benefit from an advanced diploma.