This study found high rates of problem gambling and moderate-risk of problem gambling in Swedish online casino gamblers, and even higher rates among those who gambled on both online casino and live sports betting. People who participated in these two gambling activities were most likely to have been over-indebted (e.g., not able to pay bills). Those who participated in online casino gambling also expected themselves to be over-indebted in the near future. Having problem gambling was associated with greater mental health distress and alcohol use problems. In contrast to previous research, problem gambling was more common in women than men.