The purpose of the present research was to translate into Spanish and analyze the psychometricA properties of the Situational Motivation Scale (SIMS). The participants were 373 undergraduate students (126 males and 247 females). Factor validity was tested via confirmatory factor analysis. Based on factor loadings and modification indexes, the SIMS was reduced to a 14-item model. This respecification showed adequate internal consistency and construct validity. The multistep analysis of invariance revealed that the factor structure of the SIMS is invariant across gender. Likewise, MANOVA revealed that amotivation was the only significant variable across gender. Predictive validity was assessed through path analysis. The results support the preliminary use of the Spanish version of the SIMS for the assessment of situational motivation in education.