This report provides an overview of several prominent career development theories. It begins with Donald Super's theory, emphasizing life span, life space, and self-concept, along with its stages of growth, exploration, establishment, maintenance, and disengagement. Next, it explores John Holland's trait-factor theory, focusing on the RIASEC hexagon and diagnostic indicators such as congruence and differentiation. The report then delves into social learning and cognitive theories, including Krumboltz's learning theory of career choice and decision-making (SLTCDM & LTCC), and the Cognitive Information Processing (CIP) model by Peterson, Sampson, and Reardon, which utilizes the CASVE cycle. Finally, it examines the Social/Cognitive Career Theory (SCCT) by Lent, Brown, and Hackett, highlighting self-efficacy, outcome expectations, and personal goals. The report includes references to provide additional context and support for the theories presented.