A multidimensional measure of interview anxiety, called the Measure of Anxiety in Selection Interviews (MASI), was developed using a student sample (N= 212) and tested using a sample of job applicants in a field setting (N= 276). The MASI goes beyond the measurement of “weak knees” and “sweaty palms” by providing an assessment of 5 interview anxiety dimensions: Communication, Appearance, Social, Performance, and Behavioral. The psychometric properties of the scales were strong and confirmatory factor analyses supported the a priori structure. In addition, substantial evidence for the concurrent, discriminant, criterion-related, and incremental validity of the MASI was obtained. Moreover, a multiple correlation of .34 was found for the 5 MASI scales in the prediction of interview performance. The development of the MASI has important implications for the field, as it may provide the foundation for future research on job interview anxiety, guide interview anxiety treatment programs, and promote the enhancement of job interview validity.