Face masks were considered as an effective method of preventing respiratory infections like COVID-19 infection. Identifying knowledge, attitudes, and beliefs of societies regarding face mask utilization is very important to identify gaps and intervene immediately to control the spread of the infection. Hence, the main purpose of this study was to determine the general public’s knowledge, attitude, and beliefs of proper face mask utilization in Maros districts, South Sulawesi, Indonesia. Methods: This is an across-sectional, quantitative approach study was conducted from December 2020 to February 2021. The study covered 138 adults (aged >18 years old). Data were collected using a self-reported questionnaire with yes/no questions, adopted from different studies. The analysis was used SPSS version 26. A crosstab analysis (chi-square test) was used to measure the association between the predictors and outcome variable. Statistical significance was declared at p-value < 0.001. Results: The study showed that the overall good knowledge, positive attitude, and beliefs of the societies towards compliance of face mask utilization were only 30 (21.7%), 21 (15.2%), and 30 (21.7%), respectively. In addition, incompliances of wearing mask was associated with low knowledge, negative attitude and negative beliefs with P-value <0.001. Conclusions: In this study, the level of knowledge, attitude and beliefs towards face mask utilization was relatively low, and the level of proper face mask utilization was quite low in comparison with some studies. Comprehensive training about a face mask that focuses on its proper use should be designed and given by the authorities to general public in order to prevent and controlling COVID-19 cases.