BACKGROUND: Unmet health care needs are associated with negative health outcomes, yet there is a paucity of data on this problem among older people. OBJECTIVE: To identify unmet health care needs and associated factors among older people in France. METHODS: This is a cross-sectional population study of people aged 70 years or older in which 2350 respondents were interviewed in 2008-10. During a standardized interview, a nurse examined health problems, functional abilities and use of health care resources. Unmet health care needs were defined as situations in which a participant needed health care and did not receive it. RESULTS: The mean age was 83.2 ± 7.4 years. Almost all participants reporting a chronic disease (98.6%) had consulted a physician in the previous 6 months. Unmet health care needs were found in 23.0% of the sample and mainly consisted of lack of dental care (prevalence of 17.7%), followed by lack of management of visual or hearing impairments (prevalence of 4.4% and 3.1%, respectively). Age was the main factor associated with unmet health care needs [compared with people aged 70-79: odds ratio80-89 years = 2.26 (1.70-3.03), odds ratio90 years and over = 3.85 (2.71-5.45)]. Other associated factors were regular smoking, homebound status, poor socioeconomic conditions, depression, limitations in instrumental activities of daily living and low medical density. CONCLUSION: Unmet health care needs affect almost one-quarter of older people in France. Efforts should be made to improve oral health and develop home care, especially for the oldest-olds.