Objectives: To validate the German version of OMPSQ (OMPSQ-G) for patients with chronic neck pain. Results: After translating OMPSQ to German, we assessed the discriminant validity between patients and healthy adults. Convergent validity was assessed using Pearson’s correlation coefcients between domains of OMPSQ-G and the German version of neck disability index (NDI-G) and visual analogue scale (VAS) of neck pain intensity. Floor and ceiling efects, internal consistency, test–retest and relative reliability were assessed. Fifty patients with chronic neck pain (mean age, 43.6 years; 34 females) and 24 healthy adults (mean age, 50.4 years; 18 females) participated. Mann–Whitney U tests showed signifcant diferences in OMPSQ scores between both groups at the baseline (z=−4.6; p<0.001) and second time point (z=−4.8; p<0.001). OMPSQ-G scores highly and moderately correlated with NDI-G (ρ=0.70) and VAS (ρ=0.41) scores, respectively. There were no foor or ceiling efects. Cronbach’s alpha was 0.94. OMPSQ-G showed high reliability (intraclass correlation 2.1: 0.93; standard error of measurement, 6.9; smallest detectable change, 20 points). The Bland–Altman plot indicated no systematic error. OMPSQ-G showed good validity and reliability in patients with neck pain.