This document defines and categorizes different types of curriculum. It begins by providing the etymology and multiple definitions of curriculum. It then outlines 11 main types of curriculum: 1) overt/explicit, 2) hidden, 3) null, 4) phantom, 5) concomitant, 6) rhetorical, 7) curriculum-in-use, 8) received, 9) internal, 10) electronic, and 11) types are further explained with examples of what each entails and the lessons or messages students derive from each type. The document concludes by listing its references.