There is growing evidence that an organization's training climate can influence the effectiveness of formal and informal training activities. Unfortunately, there is limited data regarding the psychometric properties of climate measures that have been used in training research. The purpose of this article is to examine the construct validity of a training climate measure. Results from content adequacy, reliability, aggregation, and convergent, discriminant, and criterion-related validity assessments provide support for the measure's use in diagnostic and theory testing efforts.