Background: An emerging body of international research suggests family caregivers may be a high-risk group for suicide, but the evidence has not been synthesised. Methods: Forty-eight peer-reviewed journal articles were included in this review, spanning low-, middle-, and high-income countries and a variety of illnesses and disabilities. Findings: The proportion of caregivers experiencing suicidal ideation ranged from 2.7% to 71%, with evidence of suicide attempts, deaths by suicide, and deaths by homicide-suicide also reported.