A cohort of tonsil and salivary gland cancer patients who received ipsilateral curative-intent radiotherapy delivered by IMPT or VMAT were reviewed. This study reported that 40 patients treated with IMPT had decreased dose to multiple OARs and less deterioration in the following patient-report outcomes: pain, swallowing function, dry mouth, sticky saliva, sensory change, cough, speech, feeling ill, and social eating. Physician-reported toxicities demonstrated less oral pain.