A lamp for a vehicle, the lamp comprising: a light source unit provided with at least two light sources; a reflection unit located between the at least two light sources, and provided with a reflector configured to reflect light emitted from the at least two light sources; a lens having a first region and a second region on which direct light emitted from each of the at least two light sources is incident, and a third region on which reflected light reflected by the reflector is incident, the third region being different from the first and second regions; and a processor configured to control at least one of the light source unit and the reflection unit such that a size or center position of at least one of the first to third regions changes through movement of at least one of the light source unit and the reflection unit, characterized in that the reflection unit comprises: a pivot connecting portion connected to the reflector; an actuator connected to the pivot connecting portion; and a plurality of reflective surfaces, wherein the plurality of reflective surfaces are connected together at a center and are independently rotatable with respect to the center, wherein the center position or size of the third region is changed when an inclination of at least one of the plurality of reflective surfaces of the reflector changes through rotation of at least one of the plurality of reflective surfaces, and wherein center positions and/or sizes of the first region and the second region change in response to a rotation or a linear movement of the at least two light sources. a light source unit provided with at least two light sources; a reflection unit located between the at least two light sources, and provided with a reflector configured to reflect light emitted from the at least two light sources; a lens having a first region and a second region on which direct light emitted from each of the at least two light sources is incident, and a third region on which reflected light reflected by the reflector is incident, the third region being different from the first and second regions; and a processor configured to control at least one of the light source unit and the reflection unit such that a size or center position of at least one of the first to third regions changes through movement of at least one of the light source unit and the reflection unit, characterized in that the reflection unit comprises: a pivot connecting portion connected to the reflector; an actuator connected to the pivot connecting portion; and a plurality of reflective surfaces, wherein the plurality of reflective surfaces are connected together at a center and are independently rotatable with respect to the center, wherein the center position or size of the third region is changed when an inclination of at least one of the plurality of reflective surfaces of the reflector changes through rotation of at least one of the plurality of reflective surfaces, and wherein center positions and/or sizes of the first region and the second region change in response to a rotation or a linear movement of the at least two light sources. a pivot connecting portion connected to the reflector; an actuator connected to the pivot connecting portion; and a plurality of reflective surfaces, wherein the plurality of reflective surfaces are connected together at a center and are independently rotatable with respect to the center, wherein the center position or size of the third region is changed when an inclination of at least one of the plurality of reflective surfaces of the reflector changes through rotation of at least one of the plurality of reflective surfaces, and wherein center positions and/or sizes of the first region and the second region change in response to a rotation or a linear movement of the at least two light sources.