Lamp for vehicle

A lamp for a vehicle, the lamp comprising:

• a light source;
• and
• a light guide part provided at one side of the light source and configured to receive light emitted from the light source,
• wherein the light guide part comprises:
• a front surface portion configured to define a front region of the light guide part;
• a rear surface portion configured to define a rear region of the light guide part;
• an upper surface portion configured to connect the front surface portion and the rear surface portion and configured to define an upper region of the light guide part;
• and
• a lower surface portion configured to connect the front surface portion and the rear surface portion and configured to define a lower region of the light guide part,
• wherein the light source comprises:
• a first light source disposed rearward of the light guide part and provided to face the rear surface portion;
• and
• a second light source provided below the first light source and spaced apart downward from the rear surface portion,
• wherein the lower surface portion comprises a flange region comprising a portion protruding downward, the flange region partially provided forward of the second light source, and
• wherein a portion of the flange region that faces the second light source comprises a concave-convex section having a concave-convex shape.