The Weekly Stress Inventory (WSI) has been used both in research and in clinical settings to measure minor stress. Although this tool offers a reliable and valid measure to assess minor stress, it lacks brevity that would make it more feasible for rapid assessments of stress needed in many research and clinical settings. The current study assessed the psychometrics of the newly developed Weekly Stress Inventory Short Form (WSI-SF), a 25-item scale to measure minor stress. Adults attending general medicine clinics (n = 171) at a public teaching hospital completed the WSI-SF and the WSI. The WSI-SF was found to have good internal consistency for both the events score (.92) and impact score (.91) and good convergent validity with the WSI. The results of the present study suggest that the WSI-SF is a reliable and valid instrument for use in assessing minor stress.