The purpose of this study is to determine the level of food safety knowledge and attitude of the managers and employees of the food suppliers that provides meat, poultry, fish, eggs, cereals, dried beans, etc. to catering companies. The research is based on a survey conducted with 319 supplier company employees. It is composed of 34 questions and applied via face-to-face interviews by researchers. As a result of the survey, it is found that the knowledge scores of the individuals are intermediate, and attitude scores are higher intermediate. In addition, the knowledge scores of the young employees and managers are significantly high. (p<0.05).A need for an effective and continuous training for food suppliers’ employees about food and personal hygiene is emerged as a result of this research