The Coronavirus disease (COVID-19) pandemic has led to unprecedented restrictions on movement potentially affecting daily physical activity levels, raising concerns about possible negative health outcomes associated with physical inactivity. This study aimed to assess physical activity levels among adults in Kuwait during the COVID-19 pandemic. 679 adults residing in Kuwait completed the International Physical Activity Questionnaire short form (IPAQ) online between June and July of 2020. Participants were recruited via social media. Results show that of the total sample, 28.9% were in the high category, 35.8% were moderate, and 35.3% were in the low physical activity category. Moreover, no significant differences between genders were detected (P=0.460), but physical activity was significantly associated with age (P=0.022), among adults in Kuwait. Physical activity was significantly reduced with increasing age. Therefore, targeted public health initiatives in Kuwait are required to encourage physical activity during viral pandemics and specifically adults of over 45 years old.