Workplace violence (WPV) is a commonly reported occupational hazard in healthcare and its prevalence is increasing. WPV occurs in all types of practice settings, but little is known about WPV in primary care settings in the United States (US). Because primary care practice settings differ from the inpatient settings, further examination of WPV in primary care is warranted. Our objective was to summarize the available literature highlight important gaps. We conducted a search using Pubmed and OVID for US studies of WPV in US-based adult primary care practices. Studies including only pediatric populations were excluded. Due to the lack of available literature conducted in US primary care settings, we expanded our search to include international studies. We identified 70 studies of which 5 were US based. Due to the lack of significant numbers of US-based studies, we opted to conduct a narrative review of all available studies. The evidence shows that WPV is a common occurrence in primary care settings in many countries and that the majority of primary care clinicians have experienced at least some form of non-physical violence in their careers. Most of the studies conducted were cross-sectional in design and reported on both non-physical and physical forms of WPV. There was not a consistent trend between genders in experiencing the major forms of WPV, but women were consistently more likely to be subjected to sexual harassment. Potential root causes for WPV could generally be categorized as patient-level, clinician-level, clinical encounter specific, and operational root causes. While most WPV was found to be non-physical, it still had significant emotional and job-related impacts on clinicians. These troubling results highlight the need for further studies to be conducted in the US.