Background: Food insecurity, (FI) a significant public health issue, can have a serious detrimental effect on controlling diabetes. Objective: to assess the frequency of household FI in the type 1 diabetes mellitus (T1D) families attending the diabetes clinic and to determine the relation between FI and glycemic control among T1D children. Methods: A cross-sectional study was conducted in the period from November 2021 to October 2022 0n 237 parents of TIDM children who come to receive periodic insulin therapy and routine checkups using a structured questionnaire consisting of three parts; socioeconomic level, medical history, and food security questionnaire. Body mass index (BMI) and Hemoglobin A1c levels were assessed in all children. Results: According to glycemic control, 50.6% had poor glycemic control and 59.6% of studied patients belonged to food insecure families. Low socioeconomic standard (SES), maternal basic education, secondary education, and comorbid celiac disease significantly increased risk of food insecurity by 5.308, 4.176 and 10.406 folds respectively. Comorbid celiac disease, thyroid diseases, low SES, low mother education, hospitalization in the last year, were significantly associated with poor glycemic control. Low BMI, obese, comorbid celiac disease, FI significantly increase risk of poor glycemic control by 12.349, 19.313, 6.39 and 2.353 folds respectively. CONCLUSION: Low SES, poor glycemic control, and lower maternal education were predictors of food insecure patients. FI prevailed in a larger percentage of studied patients, and it is independently associated with poor glycemic control in patients with T1DM.