Aims and Objectives: This study aimed to analyse the prevalence and factors associated with suicidal ideation among family caregivers of people with mental disorders.; Background: Studies conducted with family caregivers of people with dementia and cancer point out a high prevalence of suicidal ideation among these subjects; however, this aspect has not yet been investigated among family caregivers of people with mental disorders.; Design: This is a cross-sectional study, conducted with 537 family caregivers of patients from 16 Psychosocial