Suicide in people between the ages of 15 and 24 is one of the top three causes of death. The aim of this research is to compare and associate performance in working memory, attention, and inhibitory control with the presence of suicidal behavior in adolescents. Research design was cross-sectional and the convenience sample consisted of 65 adolescents from the city of Temuco, Chile. The instruments used for data collection were: 1) the Okasha Suicidality Scale, 2) span of direct and indirect digits, and 3) the Stroop test. The results show that 49.3% of the adolescents had suicidal ideation. In terms of the groups, an association and significant differences were found in the Stroop test; this occurred specifically in the female sex (p < .05). In the rest of the tasks that measured memory and attention, no differences were observed (p > .05). It is concluded that suicidal behavior is associated with a lower performance in inhibitory control tasks for females.