An Infant Head Fixing Unit is a Class I medical positioning device designed to safely stabilize and maintain proper head and neck alignment in neonates and infants during medical procedures, respiratory support, imaging studies, and ongoing care in NICUs, delivery rooms, and transport settings. Constructed with medical-grade materials (radiolucent plastics, pressure-distributing foam/gel, waterproof covers) and available in preterm, term, infant, and adjustable sizes. Features include contoured head support, adjustable lateral stabilizers, optional securing straps, and compatibility with incubators, radiant warmers, and procedure tables. Primary clinical applications include maintaining airway alignment during non-invasive ventilation (CPAP, high-flow nasal cannula), stabilizing head for procedures (umbilical line placement, lumbar puncture), preventing motion artifact during imaging (cranial ultrasound, CT, MRI), protecting neurosurgical sites post-operatively, and preventing positional plagiocephaly. Critical safety considerations include verifying neutral head position to maintain patent airway, regular skin checks for pressure points, appropriate sizing to prevent movement or pressure injury, and radiolucent/MRI-safe verification for imaging studies. Essential positioning equipment for safe, developmentally supportive care of hospitalized infants.