Abstract: A new Air Responsive Illuminated Pacifier for providing a pacifier having a light source which is activated when an child sucks on the pacifier. The inventive device includes an airtight nipple portion, a handle portion attached to the nipple portion, and a light source and a pressure actuated switch positioned within the handle portion, wherein the switch activates the light source when a child sucks on the nipple portion. A single activation of the light source causes the light source to remain lit for a predetermined time (e.g., 15 seconds). When activated, the light source emits light into a hollow interior cavity of the handle portion. The handle portion is made of a translucent or luminescent material. When the handle portion is made of a luminescent material, the handle portion continues to glow for a substantial time after extinguishment of the light source, thereby enabling a child or parent to easily locate the pacifier in the dark.