Gambling can cause harms for both the person who gambles as well as those close to them, often referred to as ‘affected others’. Affected others can be family members or non-family members of the person who gambles. This study surveyed people in Finland to see how many were affected others, what their relationships were to the person who gambled, and what harms they experienced. About 13% of participants were affected others. Overall, the most common types of harm they experienced were emotional, relationship, and financial harms. Additionally, those who were family members tended to experience more harm than non-family members. However, the type and amount of harm affected others experienced differed based on their specific relationship with the person who gambled.