Background: The objectives of this study were: (1) to compare the pain intensity, cervical range of motion (ROM), psychological distress and kinesiophobia in patients with cervicogenic dizziness (CGD), tension-type headache (TTH), and mechanical chronic neck pain (MCNP); and (2) to investigate the relationships between pain intensity and cervical ROM and between psychological distress and kinesiophobia. Methods: a cross-sectional and correlational study was designed. In total, 109 patients (32 patients with CGD, 33 with TTH and 44 with MCNP) were included. Pain intensity, cervical ROM, psychological distress and kinesiophobia were assessed. Results: Statistically significant differences were found between the groups in pain intensity, psychological distress and kinesiophobia. The patients with MCNP showed higher pain intensity compared to the other groups (p < 0.001). The patients with CGD showed higher depression and kinesiophobia values compared to the MCNP and TTH groups (p < 0.05). No differences were found for cervical flexion, extension, lateral flexion, or rotation ROM (p > 0.05). The CGD and MCNP groups found a moderate positive correlation between psychological distress and kinesiophobia (p < 0.05). The patients with TTH and MCNP showed a moderate positive correlation between pain intensity, psychological distress and kinesiophobia (p < 0.05). Conclusion: Pain intensity, psychological distress and kinesiophobia should be considered in the three groups. Psychological distress was correlated with kinesiophobia in the CGD and MCNP groups. The MCNP group showed a correlation between pain intensity, psychological distress and kinesiophobia.