Objective <p>To investigate evidence regarding the association between carbohydrate intake (general and sugar) during pregnancy and offspring’s diet pattern and/or food preference in animals and humans until adolescence.</p> Methods <p>Interventional and observational studies with animals (AS) and humans (HS) were included. Six databases and gray literature were consulted. Risk of bias was assessed using the SYRCLE tool for AS and the Newcastle-Ottawa Scale (NOS, 9 stars in total) for HS. The certainty of evidence was evaluated using GRADE.</p> Results <p>Eleven articles were included. In AS (<i>n</i> = 6), general carbohydrate intake during pregnancy was associated with offspring’s preference for high-fat and high-fat-protein diets, while in HS (<i>n</i> = 5) it was associated with increased carbohydrate consumption by children (<i>p</i> = 0.002) and a Western diet pattern in infants. AS studies on maternal sugar intake during pregnancy showed inconsistent results, with some associating it with offspring’s sucrose preference and others finding no effect. In HS, maternal sugar intake was linked to the consumption of high-sugar products by infants up to adolescence. A high risk of bias was attributed to most categories in AS. In HS, NOS scores ranged from 7 (<i>n</i> = 2) to 8 (<i>n</i> = 3) stars, indicating methodological flaws. All studies were classified as having low certainty of evidence.</p> Conclusion <p>Maternal carbohydrate intake during pregnancy was associated in some studies with offspring’s dietary patterns and preferences, supporting nutritional guidance during this period to promote healthier long-term habits. However, the evidence remains limited, reinforcing the need for further research.</p>