Interest in effective health care teamwork has advanced in recent years. To ensure these teams are performing effectively, valid and reliable measurement is necessary. This review identifies and organizes information about measures of health care team performance by addressing the following objectives: (a) identify existing measures of health care team performance ( k = 70), (b) summarize validity evidence (i.e., construct and content validity), (c) summarize reliability information (i.e., interrater/interobserver reliability and internal consistency), (d) summarize information pertaining to the use and implementation of the measures (i.e., generalizability, instrument type, and clarity of language), and (e) identify the teamwork content included in the measures. These findings can aid researchers and practitioners in selecting a measure that is appropriate for a specific context. This review also illuminates areas where future research is needed by identifying types of reliability, validity, and teamwork content that have been largely unaddressed.