BACKGROUND: Incivility among workers in the health sector is recognized as an occupational hazard. The COVID-19 outbreak brought sudden and profound changes to many health care settings, many of which have been identified as antecedents to workplace incivility. The purpose of this retrospective study was to explore the experiences of registered nurses with workplace incivility, cyber-incivility, and incivility outside of work during the early phase of the COVID-19 pandemic. METHODS: This mixed-methods study used convenience sampling. Data were collected from June to September 2020 via an online survey, which consisted of both closed- and open-ended questions. Participants were recruited from national nursing organizations and unions. Data were analyzed using descriptive statistics and thematic analysis for open-ended responses. FINDINGS: A total of 526 nurses' responses were included in the analysis. More than one third experienced greater incivility at work during the COVID-19 outbreak than before the pandemic (37.4%), and almost half (45.7%) said they witnessed more incivility than before the pandemic. Cyber-incivility and incivility outside of work were also issues. Qualitative results indicated that respondents felt they were on edge during this period. Other themes included leadership failure, fractured co-worker relationships, heightened incivility from patients and families, and hostility and ostracism from the general public. CONCLUSION/APPLICATION TO PRACTICE: Occupational health nurses, nursing leaders, and staff nurses need to work to restore relations that were fractured by incivility during the pandemic. In the future, improved preparedness, including establishing clear channels of communication, may lessen incivility by decreasing role stress and organizational chaos.