Lamp for vehicle

A lamp for a vehicle, comprising:

• a first lamp module including a first light source part and a first lens part configured to form a first light distribution pattern with light irradiated from the first light source part;
• a second lamp module including a second light source part and a second lens part configured to form a second light distribution pattern with light irradiated from the second light source part;
• and
• a third lamp module including a third light source part and a third lens part configured to form a third light distribution pattern with light irradiated from the third light source part, wherein:
• the first lens part, the second lens part, and the third lens part are connected to each other to define one body,
• an output surface of the first lens part, an output surface of the second lens part, and an output surface of the third lens part are integrated to form one light output lens surface to provide output light from the vehicle lamp, and
• the light output lens surface includes a plurality of multi-facet lenses are formed to be gradually stepped toward an opposite direction to an output direction of the output light as the multi-facet lenses extend from one side to an opposite side of the light output lens surface in a leftward/rightward direction.