Objectives: to analyze self-care deficit among older men in the COVID-19 pandemic in Brazil and to discuss the implications for nursing practice. Methods: web survey, multicentric, qualitative. A total of 120 older men participated, applying a form from April to June 2020 and April to August 2021. Reflective Thematic Analysis, interpreted by Orem’s Self-Care Deficit Theory, was used. Results: temporally, the self-care of older men was manifested in the self-care requirements - affective bonds, self-care for development - meditation and self-care with health deviations - remote consultations. Fully, partially compensatory, educational/support systems mobilized self-care. Final Considerations: as care managers, nurses can strengthen the support network for older men by activating professionals from the multidisciplinary team, family members, caregivers and the community to promote self-care and correct health deviations in times of crisis.