Mental health settings are recognized as complex, unpredictable environments, and challenging interpersonal situations are common for nurses in acute adult mental health services. Occupational stressors include verbal aggression and physical assault and are correlated with poor physical and mental health outcomes for nurses. There is a clear need for proactive approaches that address the negative impacts of stressors on the mental health nursing workforce. Resilience interventions are a preventive approach to strengthening skills for addressing workplace stress, improving health and well‐being, and preventing adverse outcomes associated with occupational stressors. The aim of this study was to evaluate the feasibility of a workplace resilience education programme for nurses in high‐acuity adult mental health settings. The outcomes were measured using a single‐group pretest post‐test design with follow‐up at 3 months postintervention. The feasibility and acceptability of the programme were identified with descriptors of mental health, well‐being, resilience, facilitator fidelity checklists, and participant satisfaction questionnaires. The programme was found to be feasible for nurses working in high‐acuity inpatient settings. There were significant changes to mental health, well‐being, and workplace resilience. The programme was delivered with fidelity by facilitators and accepted with high levels of satisfaction by participants. The study findings indicated that nurses can benefit from resilience education that equips them with cognitive, emotion regulation, and relational skills, in conjunction with available external supports and resources, to address workplace challenges. There is a need for comprehensive organizational approaches that include individual, work unit, and organizational‐level strategies to support staff well‐being.