In a lighting unit (1) for a headlight, in particular a vehicle headlight, consisting of a plurality of light sources (2) and a light-guiding unit (3) having a plurality of light guides (6), each light guide (6) is assigned a light source (2) and the light-guiding unit (3) consists of at least two interconnectable parts (4, 5), wherein a light-source-side part (4) of the light-guiding unit (3) is arranged in the emission direction of the light-guiding unit (3) between the light sources (2) and an emission-side part (5) of the light-guiding unit (3).