This cross-sectional study investigates neck-related disability in individuals with chronic neck pain by examining the combined influence of temporomandibular disorders, sleep quality, and cervical sensorimotor function within a single analytical model. Although these factors have previously been investigated separately, their combined contribution to disability has not been sufficiently explored. By integrating these clinical variables within one framework, our study aims to provide a multidimensional clinical perspective relevant to assessment and rehabilitation planning in musculoskeletal practice. Given the increasing clinical recognition of the interaction between temporomandibular and cervical systems, this study may help clinicians better understand multidimensional contributors to disability in chronic neck pain.