Background: Family caregivers have a significant role in Thai healthcare, taking on responsibilities of health professionals. The purpose of this research was to explore Thai family caregivers' experiences of providing palliative cancer care. Methods: This qualitative study took a phenomenological approach. In-depth interviews were conducted with 14 family caregivers aged 33–72 years in a regional hospital in the north of Thailand. The data was analysed using Colaizzi's phenomenological approach. Rigour was established by following Lincoln and Guba's guidelines for qualitative research. Findings: The experiences of Thai family caregivers providing palliative cancer care could be categorised into four themes: caring as a team; caring as supportive care; taking care to keep patients happy; and caring for the self while looking after a relative. Conclusion: Health professionals can support family caregivers to deliver the best care for cancer patients and to help them decrease their stress. This study discusses ways how this may be done.