Winifred W. Logan (born 1931) is a British Nurse theorist who was co-author of the Roper-Logan-Tierney model of nursing, and became an executive director of the International Council of Nurses, and Chief Nurse in Abu Dhabi. Winifred W. Logan was born on 9 May 1931 and trained as a nurse at the University of Edinburgh, and later took a Masters Degree there and at Columbia University, New York, did an M.A. in nursing in 1966. Earlier in her nursing career (around 1950), Logan had come across foreign patients experiencing some 'culture shock' in a Canadian tuberculosis and thoracic health care facility. This led to Logan recognising that nurses need to take cognisance of the patient's biological, psychological, sociocultural and environmental needs in caring for them properly. Logan started a teaching post at the University of Edinburgh School of Nursing from 1962. Logan was appointed as Nurse Education Officer at the Scottish Office during the 1960s to 1970s. It may be there or at the University, that she first met Nancy Roper, her collaborator on the Activities of Living model of nursing. Logan also became an executive director of the International Council of Nurses in 1960, a consultant for the World Health Organisation (WHO) in Malaysia, Europe, and Iraq. Between 1976 and 1980, Nancy Roper invited Logan and Alison J. Tierney (also an Edinburgh alumna and staff member) to collaborate on a model of nursing. After her writing on nursing theory, Logan became Chief Nursing Officer of Abu Dhabi, establishing nursing services there. With fellow University of Edinburgh alumna and its School of Nursing employees, Nancy Roper and Alison J. Tierney, Logan was one of this British nurse trio who led the development of the first UK model of nursing published and improved upon, and internationally applied, since 1980. "The Roper-Logan-Tierney model is based upon activities of living, which evolved from the work of Virginia Henderson in 1966.