This study sought to assess treatment satisfaction among patients on antidepressants, ascertaining whether there might be an association with depressive symptomatology and other variables. Cross-sectional study conducted on 564 adult patients taking antidepressant medication. Satisfaction with antidepressant treatment was assessed using the Assessment of Satisfaction with Antidepressant Treatment Questionnaire (ESTA/Evaluación de la Satisfacción con el Tratamiento Antidepresivo). A moderate negative correlation was observed between satisfaction and intensity of depressive symptoms, as assessed with the Montgomery–Asberg scale. A weak negative correlation was observed between greater satisfaction and less favourable views about taking medication. Satisfaction scale scores were higher among those who took antidepressant medication for 1 year or more versus shorter periods. Most patients reported being satisfied with the antidepressant treatment but the level of satisfaction was higher among those who presented with less marked depressive symptoms, received longer-term treatment and viewed drug treatments favourably. Treatment satisfaction is one of the patient-reported outcome measures that can serve to complement clinical evaluation of depressive disorders.