Toddlers' sleep difficulties have mainly been investigated from the mother's point of view, despite the fact that paternal implication seems to influence young children's sleep quality. This qualitative study aims to better understand how fathers experience toddlers' sleep difficulties by examining their sleep-related cognitions and strategies used to solve their child's sleep problems. Thirty-six French fathers of children aged between 9 months and 4 years old answered to a semi-directive interview. Thematic analysis revealed that cognitions seeking to understand the sleep difficulties were mainly related to immediate child-related factors such as physical discomfort or psychological need. A variety of strategies were reported: technical solutions were the most frequently represented, followed by limit-setting, physical comfort, and for some, a lack of strategy. Most fathers also expressed how the difficulties affected them. The results bring out clinical perspectives that can help promote fathers' implication in the improvement of children's sleep consolidation.