Illumination device for baby bottles, applicable to illuminate any type of beverage or food collected in said bottles, characterized by being constituted from a casing (1), made of any suitable material, of the flexible and/or extensible type, such as plastic or rubber or textile type, these materials can be combined with each other, adopting an approximately cylindrical configuration, which allows to be adjusted to the diameter of the bottle, surrounding it superimposed on the surface of the bottle as a way of holding the bottle ( 2), counting on its back part with a system of openings or practicable cover (3) that gives access to its interior, in which it has 2 differentiated elements, a light emitter (4), and a pushbutton or regulator of luminous flux (5); wherein the light emitter (4) is responsible for illuminating the contents of the bottle, the head protruding through an opening (6) of the casing (1), properly located, as it could be on the back of the casing ( 1); where the light emitter (4) is activated by the pushbutton or light flow regulator (5) that protrudes through another opening (7) of the casing (1), suitably located, such as it could be in the lower part of the casing (1). (Machine-translation by Google Translate, not legally binding)1. Dispositivo de iluminación para biberones, aplicable para iluminar cualquier tipo de bebida o alimento recogido en dichos biberones, caracterizado por estar constituido a partir de una carcasa (1), fabricada en cualquier material apropiado, del tipo flexible y/o extensible, tal como plástico o goma o de tipo textil, pudiendo combinarse estos materiales entre sí, que adopta una configuración aproximadamente cilíndrica, que permite ser ajustado al diámetro del biberón, rodeando al mismo de manera superpuesta a la superficie del biberón como modo de sujeción del biberón (2), contando en su parte trasera con un sistema de aberturas o tapa practicable (3) que da acceso a su interior, en el que se cuenta con 2 elementos