Mühendislik de bilim gibi çok geniş dalları olan bir alandır ve genelde dört ana dala ayrıldığı düşünülür:<ref>{{webWeb kaynağı | başlık = Journal of the British Nuclear Energy Society - Google Books | url = http://books.google.ca/books?id=Hy9WAAAAMAAJ&q=In+most+universities+it+should+be+possible+to+cover+the+main+branches+of+engineering,+ie+civil,+mechanical,+electrical+and+chemical+engineering+in+this+way.&dq=In+most+universities+it+should+be+possible+to+cover+the+main+branches+of+engineering,+ie+civil,+mechanical,+electrical+and+chemical+engineering+in+this+way.&hl=en&ei=2UkYTff0MZL-ngfesbGMDg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCoQ6AEwAA | erişimtarihi = 12 Haziran 2014 | arşivurl = http://web.archive.org/web/20141006102530/http://books.google.ca/books?id=Hy9WAAAAMAAJ&q=In+most+universities+it+should+be+possible+to+cover+the+main+branches+of+engineering,+ie+civil,+mechanical,+electrical+and+chemical+engineering+in+this+way.&dq=In+most+universities+it+should+be+possible+to+cover+the+main+branches+of+engineering,+ie+civil,+mechanical,+electrical+and+chemical+engineering+in+this+way.&hl=en&ei=2UkYTff0MZL-ngfesbGMDg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CCoQ6AEwAA | arşivtarihi = 6 Ekim 2014}}</ref><ref>{{webWeb kaynağı | başlık = web.archive.org | url = http://web.archive.org/web/20070810194330/http://www.engc.org.uk/documents/Hamilton.pdf | erişimtarihi = 12 Haziran 2014 | arşivurl = http://web.archive.org/web/20130813163047/http://web.archive.org/web/20070810194330/http://www.engc.org.uk/documents/Hamilton.pdf | arşivtarihi = 13 Ağustos 2013}}</ref>
* [[Elektrik mühendisliği]]: Çok geniş bir alandır. Elektrik devreleri ve motorlarından, bilgisayar sistemlerine elektronikten; haberleşmeye kadar pek çok alanı kapsar.
