The criminal offense of robbery generally involves the taking of property from another person, in the presence of the other person, by violence, intimidation, or threat of imminent bodily injury or death, and with the intent to permanently deprive the owner of the property. And in some states the crime of robbery can become the more serious crime of aggravated robbery (with increased potential punishments) if the person exhibits a deadly weapon such as a gun or knife, or causes great bodily injury or death, for example.

Robbery is a felony offense punishable by significant jail or prison time. Laws regarding robbery offenses are generally located in a state’s statutes—often in the penal or criminal code.

In California, robbery is defined under Penal Code 211 PC as the felonious taking of personal property in the possession of another, from his or her person or immediate presence, and against his or her will, accomplished by means of force or fear. The state differentiates between first-degree robbery, which occurs in residences, against drivers or passengers of vehicles, and near ATMs, and second-degree robbery, which encompasses all other types of robbery. First-degree robbery is punishable by imprisonment in the state prison for three, six, or nine years, while second-degree robbery can result in two, three, or five years of imprisonment. Aggravated robbery, which involves the use of a deadly weapon, causing great bodily injury, or other aggravating factors, can lead to more severe penalties, including longer prison sentences and higher fines. California's 'Three Strikes' law can also significantly increase the prison time for those with prior serious or violent felony convictions.