BACKGROUND AND OBJECTIVES: The use of complementary and alternative medicine (CAM) is growing among adults and children. Extensive data is available regarding the pattern and frequency of CAM used in adults in Saudi Arabia, but limited data is available for children. This study aims to examine the level of knowledge, attitude, and practice about the use of CAM in the pediatric population in Saudi Arabia. SUBJECTS AND METHODS: A cross-sectional descriptive study on the use of CAM in children was carried out in the general population of Saudi Arabia. Data was collected by non-probability consecutive sampling technique through an online-based questionnaire from 132 participants. In addition, data analysis was done using IBM's Statistical Package for the Social Sciences (SPSS). The data collected consisted of socio-demographic details, knowledge, attitude, and practice of CAM in children. RESULTS: CAM was reported in all 132 participants (100%), with 45% (N=59) using it without informing their physicians. The mean age of the children was 17 months old, 55.3% (N=73) children were males, and 44.7% (N=59) were females. The most common form of CAM used was herbal medicine, 91% (N=120), while alternative medicine was used in 16.7% (N=12) of the children. Honey was the most used herb (68.2%, N=90), followed by anise (65.2%, N=86), Zamzam water (holy water) (59.1%, N=78), and olive oil (56.8%, N=75). CONCLUSIONS: The use of CAM is very common for children in the general population of Saudi Arabia, with herbal medication being the most common. This constitutes a dire need to regulate this field and provide enough information for the public and health care practitioners to provide the best health care. In addition, future awareness campaigns are needed to bridge the communication gap between parents and physicians and provide better information about the benefits and safety of CAM use.