Background: The negative impact of noise in the newborn in neonatology units, as well as in the parents and health professionals, is known, so it is essential to raise awareness of the reduction and control of this stressor agent. Objectives: To identify the perception of health professionals about noise in neonatology. Methodology: Qualitative-quantitative and descriptive study. A non-probabilistic sample of 52 health professionals. An ad-hoc questionnaire designed for this purpose was used. Results: The majority of professionals considers neonatology units noisy and uncomfortable in performing functions and believes that noise has adverse effects, although there is little knowledge about the decibel values recommended for the neonatal unit. Conclusion: The perception of health professionals about noise indicates the need to implement a noise reduction program. We consider the training and involvement of the team relevant, so professionals can be active and inciting in the adoption of measures that promote an acoustically healthy environment for the newborn and the well-being of parents and health professionals.