Abstract: An improved neck support for a nasal cannula assembly. The neck support includes a support bracket having a central opening therethrough for receiving and engaging a main oxygen supply conduit of the nasal cannula assembly to attach the nasal cannula assembly to the support bracket. The central opening includes an access slot for the main oxygen supply conduit. The neck support further includes a flexible chain which attaches to the support bracket and which can be placed loosely around a patient's neck. In use, the neck support can be rested against the patient's body and supported by the flexible chain about the patient's neck such that a substantial portion of the weight of the nasal cannula assembly is borne by the patient's neck.