The refill for devices for evaporating volatile substances comprises a body (1 ) provided with a neck (2), which comprises first coupling means (4； 5； 6) to a device (10； 20； 30) for evaporating volatile substances, and is characterized in that it also comprises at least second coupling means (4； 5； 6) to a device for evaporating volatile substances (10； 20； 30). It enables the use thereof with different devices for evaporating volatile substances by using one of said coupling means, depending on the means provided in the device.
