Background Nurses represent the largest group of health care professionals working with incarcerated persons, yet there is limited understanding of their learning needs, or their roles and responsibilities; and what is known is poorly disseminated. Purpose The goal of this research was to describe the roles, responsibilities, and learning needs of correctional nurses practicing in provincial correctional facilities in Alberta and Manitoba, and to add these data to the existing data set from Saskatchewan. Methods Three hundred and forty nurses working in provincial correctional facilities in western Canada were invited to complete a self-administered online survey consisting of a Learning Needs Assessment questionnaire (demographic information, knowledge and learning needs, and professional development); and the Staff Questionnaire (which targeted specific skill sets relevant to clinical practice in secure environments). Eighty-two nurses completed the online survey (overall response rate 24%). Results Overall, those who participated were experienced in nursing and correctional nursing. The learning needs they identified aligned with their correctional nursing roles and unique practice settings. In particular, issues related to the care of incarcerated persons with mental health disorders and related care were paramount (self-harming behaviours, suicide, mental health assessments in general). In response to the five comprehensive skill sets assessed in the Staff Questionnaire, respondents rated their involvement and importance of the individual skills as important to varying degrees. Conclusions The results of this survey shed light on contemporary developments in correctional nursing within provincial correctional facilities in western Canada and provide a foundation for continuing professional education and development, practice, and future research initiatives.