The major purpose of this study is to examine the effect of career goal orientation on traditional and boundaryless career successes and the moderating effect of supervisors’ support. One hundred and sixty three paired questionnaires were collected from two-wave surveys. The regression analysis results show that different career goal orientations have different effects on different career successes. Individuals with advancement goal orientation are positively related to traditional career success, whereas individuals with mastery goal orientation are positively related to boundaryless career success. In addition, supervisors’ supports positively moderate the association between advancement goal orientation and promotability ratings as well as mastery goal orientation and mobility ratings.