El presente trabajo tiene como objetivo la articulación teóricapractica de los conceptos de riesgo, urgencia y acting out con dos casos clínicos vinculados a ideas o intentos de suicidio. Para ello, se plantearon los sguientes objetivos: en primer lugar, conceptualizar acerca del riesgo de suicidio y los factores que lo determinan, evaluando los mismos en cada caso clínico. En segundo lugar, diferenciar el concepto de riesgo de la idea de urgencia subjetiva, vinculando esta última con el concepto de Acting Out. Finalmente, se exponen las distintas posiciones en la que los profesionales de salud mental son llamados a responder en situaciones de posible peligro para el sujeto, como lo legal, ético y terapéutico, buscando comprender las coordenadas de los casos. Palabras clave Suicidio - Riesgo - Urgencia - Acting out ABSTRACT SUICIDE: FROM RISK TO URGENCY. THE CHALLENGE OF ADRESSING THE ACT This paper aims to articulate the theoretical and practical concepts of risk, urgency, and acting out with two clinical cases linked to suicidal thoughts or attempts. To this end, the following objectives were set: first, to conceptualize the risk of suicide and the factors that determine it, evaluating them in each clinical case. Second, to differentiate the concept of risk from the idea of subjective urgency, linking the latter to the concept of acting out. Finally, the different positions from which mental health professionals are called upon to respond in situations of potential danger to the subject are presented, including legal, ethical, and therapeutic considerations, seeking to understand the coordinates of these cases. Keywords Suicide - Risk - Urgency - Acting out