Gambling is a widespread leisure activity with an international prevalence from 26.6 to 85.6 percent. Health, social and economic impacts of a such phenomenon need to be studied. The aging of the population remains a major societal challenge. Scientific research has therefore to provide insights regarding how to age healthy in all areas. Gambling is not immune, given that the prevalence of gambling disorder is increasing among older adults. This entry provides an overview of older gamblers: from the age, characteristics and motivations of older gamblers