The Center for Mental Health Implementation Support (CMHIS) convened a panel of national experts in measurement-based care (MBC) to compile a list of standardized, patient-reported outcome measures (PROMs). The process was guided by a review of the peer-reviewed literature as well as reports and white papers addressing implementation of MBC in community mental health settings. The committee identified a set of PROMs that were validated, brief, publicly available at no cost, and sensitive to change over time. This repository includes measures for adults and youth, addresses symptomatic and functional outcomes, has standardized and individualized approaches to measurement, and is applicable to a wide range of mental health conditions. The repository is intended to be a starting point for measure selection; other patient-reported measures not included here may also be useful in MBC. Additional information can be found on the CMHIS MBC Resource Page.