This study's purpose was to explore the relationship between emotional intelligence (EI) and motor competence (MC) in 540 children, adolescents, and young adults. Using the Schutte Self-Report Emotional Intelligence Scale (SSEIT), participants were divided in three groups of high, average, and low EI. The short form of Bruininks-Oseretsky Test for Motor Proficiency -- 2 (BOTMP-2SF) evaluated MC. Within each age and sex group, associations between MC and a) EI as a global construct and b) the four subdomains of EI were overall significant (with p < 0.01 for 85 out of 90 correlations) and very strong (with 66 correlations > 0.60). A 3 (EI groups) x 3 (age groups) x 2 (sex) ANOVA on standardized overall MC scores revealed that in all age groups, participants with higher EI outperformed their peers with average and low EI with respect to MC (p < 0.001). Additionally, boys scored higher on MC tests compared to girls (p < 0.001). A third-order interaction effect (p < 0.001) revealed that boys' superiority in MC generally decreased from childhood to adulthood, especially in the low EI group. The outcomes of this study show a robust relationship between EI and MC from childhood through early adulthood, suggesting a novel MC correlate throughout the lifespan.