Poor insight into mental illness is associated with treatment non-compliance, relapse, and re-hospitalization. Measuring insight therefore becomes important in assessing risk of noncompliance. A few reliable insight tools are available in English. The Self-Appraisal of Illness Questionnaire (SAIQ) (Marks et al. 2000) was translated into French, and validation analysis was performed. The seventeen-item French version is called the Questionnaire d’autoévaluation de l’introspection (QAI). Cronbach’s alpha showed 0.78 for internal consistency (n = 124). Factor analysis generated three factors, explaining 49.8% of the variance. They were the need for treatment (awareness of), worry, and presence/outcome of mental disorder. Concurrent validity analysis of QAI and the Insight Scale (IS) (Markova et al. 2003) resulted in a coefficient of 0.37. QAI demonstrated solid psychometric properties and should be further reassessed in research and clinical practice. It is well adapted for use in hospital and clinical setting.