A Bachelor of Engineering (BE or BEng) or a Bachelor of Science in Engineering (BS or BSE) or a Bachelor of Technology (B.Tech) is an undergraduate academic degree awarded to a student after three to five years of studying engineering at an accredited college or university.

In the United Kingdom, a Bachelor of Engineering degree will be accredited by one of the Engineering Council's professional engineering institutions as suitable for registration as an incorporated engineer or chartered engineer with further study to masters level. In Canada, a degree from a Canadian university can be accredited by the Canadian Engineering Accreditation Board (CEAB) Alternatively, it might be accredited directly by another professional engineering institution, such as the US-based Institute of Electrical and Electronics Engineers (IEEE). The Bachelor of Engineering contributes to the route to chartered engineer (UK), registered engineer or licensed professional engineer and has been approved by representatives of the profession. Similarly Bachelor of Engineering (BE) and Bachelor of Technology (B.Tech) in India is accredited by All India Council for Technical Education. Most universities in the United States and Europe award bachelor's degrees in engineering through various names.

A less common and possibly the oldest variety of the degree in the English-speaking world, is Baccalaureus in Arte Ingeniaria (B.A.I.), a Latin name meaning Bachelor in the Art of Engineering. Here Baccalaureus in Arte Ingeniaria implies excellence in carrying out the 'art' or 'function' of an engineer. Some South African universities refer to their engineering degrees as B.Ing. (Baccalaureus Ingenieurswese, in Afrikaans).