Regression equations were developed to predict Myers-Briggs Type Indicator (MBTI) scores from the Sixteen Personality Factor Questionnaire (16PF) scores. The equations were derived from intercorrelations given in the handbooks for the two instruments, and were cross-validated using data from two samples of varying populations (students and managers). Results were evaluated with respect to the ability to predict both single preference scores and the 4-letter "type". Accuracy was found to approximate the short-term test-retest reliability of the MBTI. It appears that scores from one general personality inventory (the 16PF) can provide access to constructs from a different theoretical context. Applied and theoretical implications were discussed.