The Thinksheets are a set of notes created by Willis E Elliott, who was a professor of Religion at the University of Chicago. The Thinksheets in his Collection were focused on different topics relating directly to the subject of Christian Religion and Religious Studies.

Each Thinksheet has a number e.g. #11 and a related subject. A list of indexes is available in alphabetical order on the OU Portal to the Thinksheets, so that these can be searched by topic and the associated Thinksheet is easily retrieved.