Fears are natural during development, but they can become a problem if they are excessive or recurring, associated with internalizing problems, such as anxiety. Although there has been literature exploring childhood fears for over a decade, there is still a lack of research using only preschoolers' samples and association with externalizing problems. This study investigated young children's fears and their associations with behavior problems. Seventy parents/guardians of children aged between two and five filled out 1) Fear Survey Schedule for Infants and Preschoolers (FSSIP); 2) Child Behavior Checklist (CBCL)/1,5-5. The most frequent fear was getting a shot from a nurse or doctor, and girls presented significantly higher fear than boys. Significant correlations were found between fears and internalizing