Understanding consumers’ food wasting behaviours is crucial to reducing food waste. This study aimed to adapt the Food Wasting Behaviours Questionnaire (FWBQ) to Turkish and evaluate its validity and reliability. A cross-sectional study was conducted with 421 adults, preceded by a pilot study with thirty individuals to assess the intelligibility of the questionnaire. Exploratory factor analysis (EFA) was performed on a subsample of 219 participants, followed by confirmatory factor analysis (CFA) on an independent subsample of 202 participants. Reliability was assessed using Cronbach’s alpha (CA), and test-retest reliability was evaluated with the intraclass correlation coefficient (ICC) in a separate group of 100 participants. As a result of EFA, a six-factor structure emerged – diverging from the original five-factor model of the FWBQ – indicating that in the Turkish context, planning meals and planning shopping behaviours formed distinct dimensions. Three items with low factor loadings (< 0·30) were excluded, and the final version included twenty-seven items with a total explained variance of 57·3 %. CFA confirmed good model fit, and internal consistency was strong (CA = 0·700 to 0·924). Test-retest reliability was also high (ICC = 0·787 to 0·896). In conclusion, the Turkish version of the FWBQ is a valid and reliable tool for assessing a wide range of food wasting behaviours. The emergence of a sixth factor highlights the importance of cultural context in shaping food management routines and has implications for cross-cultural comparisons and future adaptations.