The research is based on the theory of social learning and cognition proposed by Albert Bandura, the main objective is find the relationship between sexual intelligence and self-esteem in adults. The methodology used was of a quantitative approach, of a non-experimental type, with a cross-sectional design and an associative correlational scope; For this, a non-probabilistic convenience sample of 384 adults in the city of Quito, Ecuador was used. For data collection, a sociodemographic survey designed by the researchers was used, the Sheree Conrad and Michael Milburn Sexual Intelligence Test and the Rosemberg Self-Esteem Scale for adults. To test the hypothesis, the Chi-Square test was used; whose p-value = .000, which is why the null hypothesis (𝐻𝑜) was rejected, and it is affirmed that there is a relationship between sexual intelligence and self-esteem. To complement this information, Cramer's V correlation coefficient was used, the result of which is V = .263, which means that the relationship between the variables is weak. Therefore, it is concluded that despite having a moderately low sexual intelligence, self-esteem is good, besides, that self-esteem is mostly good for people with age ranges over 40 years regarding age groups older. young boys. Keywords: sexual intelligence, self-esteem, adults.