Derek

Derek is a masculine given name. It is the English language short form of Diederik, the Low Franconian form of the name Theodoric. Theodoric is an old Germanic name with an original meaning of "people-ruler". Common variants of the name are Derrek, Derick, Derik, Dereck, Derrick, and Deric. Low German and Dutch short forms of Diederik are Dik, Dirck, and Dirk.