This document provides an overview of engineering ethics and professionalism. It discusses what constitutes a profession, analyzing it from sociological, philosophical, and definitional perspectives. Engineering meets some but not all criteria of a full profession. The document also distinguishes between common morality, personal morality, and professional ethics. In engineering ethics, there is both preventive or "negative" ethics focused on avoiding harm, as seen in codes of ethics, as well as aspirational or "positive" ethics aiming for good works. Examples of both ethical lapses and good engineering projects are provided.