Editing and proofreading a piece of writing can help make meaning clear, and clarity makes it easier to understand. While editing involves changing and correcting content and syntax, proofreading involves making only minor changes, additions, or deletions to a document in order to find and mark mistakes that need to be corrected. Some of the editing strategies are editing papers alone, with a partner, expecting others to edit your paper, using computer programs and self-editing checklist. The proofreading strategies include using self/peer reading aloud and the computer spellchecking software. The current paper aims at investigating the editing and proofreading strategies used by koya University lecturers when reading through written documents and comparing English and non-English instructors in using those strategies. This study tries to find answers to these research questions: What are the editing and proofreading strategies used by Koya university lecturers? What is the difference between teachers whose specialty is English and those of non-English? To this end, the researcher administered and distributed a questionnaire of Five Point Likert Scale which composed of the participants’ demography, editing, and proofreading strategies and sent it to all Koya University lecturers at all departments. The results demonstrated that Koya University lecturers use almost all of the editing strategies and all are in favor of using the strategy of editing by themselves rather than with others. The proofreading strategies are less used but all lecturers use self-proofreading strategy. The study concludes that all Koya University teaching staff regardless of being specialized in English and non-English are not that much familiar with different types of editing and proofreading strategies.