Purpose – The aim of this paper is to present the Italian version of the Aston Team Performance Inventory (the ATPI), to assess its psychometric properties and whether its factor structure reflects the input-process-output (I-P-O) model.

Design/methodology/approach – The ATPI was administered to 702 Italian employees working in teams, recruited from the National Health Service (50.3 percent) and from public and private organizations (49.7 percent). To assess the psychometric properties of the ATPI's items, evaluation of discriminating power was performed. In addition to the reliability analyses, a confirmatory factor analysis of the full I-P-O model was also conducted.

Findings – Significant results of the Italian version of the ATPI arise from the psychometric properties, dimensions and factor structure. Results align with the English version of the inventory.

Research limitations/implications – The sample was limited and was not selected randomly. Future research should, therefore, expand the sample size and involve several types of Italian organizations. Considering these significant results, future research should validate the Italian version of the ATPI.

Originality/value – To the authors' knowledge, the Italian literature is missing instruments for the assessment of team performance in organizations. Consequently, the present study provides evidence of the value of the Italian version of the ATPI.