My husband is a violent man but I cheated on him. Should I tell him?

Put your safety first always. You mentioned that you cheated, does that mean that the relationship is not satisfying you or giving you the things that you need to be happy? In this case, I don't think it's a matter of telling him or not, but figuring out what it means that you have cheated on him and figuring out what you want going forward. What would be the purpose of telling him? To get forgiveness and move forward? Or do you no longer want to be in the relationship? I think for now, think about all of the possible outcomes if you do and don't tell him. Keep in mind your safety at all times. If your husband tends to get violent with you physically or verbally, then I would refrain from telling him until you figure out what you want. If nothing good will come of telling him, I wouldn't. You also have to think about if he were to find out, what would happen? Lots to think about. Please take some time to consider everything and please be safe. Don't do anything, unless you are sure and have thought about the consequences.