Although engineering programs are growing in popularity, attrition rates are very high. As such, there is a need to explore possible factors as to why some students succeed in engineering and other do not. This study is the first of its kind to explore whether and to what extent vocational personality traits and general personality types correlate with academic success in undergraduate engineering students. Participants included 46 engineering students recruited from Manhattan College in which vocational personality was assessed using the Self-Directed Search--Revised (SDS-R) and general personality using the NEO Personality Inventory--3 (NEO-PI-3). Grade point average and SAT scores were collected after a consent release form was signed. Results show that while SAT scores were good predictors of GPA, the addition of personality factors increased the explained variance in GPA. Specifically, the Realistic and Investigative personality types from the SDS-R and Neuroticism and Agreeableness personality traits from the NEO-PI-3 were the highest predictors of GPA after controlling for SAT Math scores. Limitations and implications for these findings are discussed below.