Background: Health-related quality of life (HRQoL) data is valuable, but limited. This analysis describes the impact of onabotulinumtoxinA treatment on HRQoL and level of treatment satisfaction in cervical dystonia (CD) patients. Methods: A multicenter, prospective, observational study in CD patients initiating onabotulinumtoxinA treatment (NCT01655862); ≤8 treatments administered at the physician’s discretion. Primary measures (baseline, 4/8 weeks post-treatment, and before final treatment): pain numeric rating scale (PNRS) and cervical dystonia impact profile questionnaire (CDIP-58). Secondary measures (8 weeks post-treatment): patient/physician treatment satisfaction. Results: 61 patients (31.3-86.3 years old) were enrolled (efficacy cohort); majority had moderately severe CD (77.0%) and were female (77%). CDIP-58 domain and PNRS scores decreased from baseline, with significant changes (p<.0001) by 4 weeks post-treatment 3 (mean±SD): symptoms (-18.8±16.1), daily activities (-7.2±13.7), psychosocial sequelae (-17.4±13.4), and PNRS (-1.8±3.3). Most patients (78.0% and 94.4%) felt their condition was improved and majority of physicians (68.9% and 75.0%) indicated satisfaction with patients’ responses following treatments 1 and 2, respectively. 27 patients reported 56 treatment-related adverse events (52 resolved, 4 ongoing); none were serious. Conclusions: No new safety signals were identified. Patients and physicians appear to be satisfied with onabotulinumtoxinA treatment for CD. Results suggest that onabotulinumtoxinA treatment may help improve HRQoL.