We aimed to develop a culturally appropriate psychometrically robust measure for assessing interprofessional socialisation for health practitioners and students in Indonesia. The COnsensusbased Standards for the selection of health Measurement INstruments (COSMIN) were used as guidelines. Our study was organised in three phases (a) translation, (b) cross-cultural validation by evaluating the content validity and internal structure of the translated instrument (i.e., structural validity, internal consistency reliability, and measurement invariances), and (c) hypotheses testing for construct validity. A total of 266 health practitioners and 206 students from various professional backgrounds participated. The Indonesian ISVS-19 was confirmed unidimensional. Content validity evaluation confirmed the inclusion of relevant, understandable items and was comprehensive. Factor Analysis supported removal of two items. Configural, metric, and scalar tests confirmed the invariance of the 1-Factor 19-Items model in practitioner and student cohorts. Age was a differentiating factor in both cohorts; length of work was only significant for practitioners, and educational background was significant for students (80% of assumptions were accepted, fulfilling COSMIN requirement for construct validity). The Indonesian ISVS-19 has good psychometric properties regarding content validity, internal structure, and construct validity, and therefore, is a psychometrically robust measure for assessing interprofessional socialisation for health practitioners and students in Indonesia.