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Aim: Specific questionnaires about food allergy and health‐related quality of life (HRQoL) have been developed and validated in several languages, but not Finnish. We aimed to validate the Finnish Food Allergy Quality of Life Questionnaire‐Parent Form (FAQLQ‐PF) for children under age 13 years. Methods: The original FAQLQ‐PF and Food Allergy Independent Measure (FAIM) were translated into Finnish per World Health Organisation guidelines and tested by 72 parents of children under age 13 years with suspected severe peanut or tree nut allergy who were recruited at Allergy Centre in Tampere University Hospital in Tampere, Finland. We calculated the construct validity of the questionnaire by calculating the coefficients between the two measures and used Cronbach's alpha to establish the internal consistency. Results: The FAQLQ‐PF showed strong correlations with domain structure and internal consistency, based on Spearman's correlations (rho) for the HRQoL questions, FAIM questions and FAIM mean values. The total questionnaire score correlated significantly with the mean FAIM (rho = 0.95, p < 0.001) and individual FAIM questions. The FAQLQ‐PF and domains had good or excellent internal consistency (Cronbach's alpha >0.70). Conclusion: The Finnish FAQLQ‐PF demonstrated good construct validity and excellent internal consistency for measuring food allergy HRQoL in children under age 13 years. [ABSTRACT FROM AUTHOR]