Involuntary manslaughter is a criminal offense defined as the unintentional killing (homicide) of another person as a result of criminal negligence, recklessness, or during the commission of a misdemeanor (driving while intoxicated), infraction (speeding), or a felony crime that was not inherently dangerous. Involuntary manslaughter is usually a felony offense and often includes significant jail or prison time as potential punishment.

Involuntary manslaughter laws vary from state to state and are generally located in a state’s statutes—often in the penal or criminal code.

In Florida, involuntary manslaughter is referred to as 'Manslaughter' and is codified under Florida Statutes Section 782.07. It is defined as the killing of a human being by the act, procurement, or culpable negligence of another, without lawful justification, and in cases where such killing is not excusable homicide or murder. This offense does not require an intent to cause death, making it distinct from murder charges. Manslaughter in Florida is a second-degree felony, which can result in up to 15 years in prison, 15 years of probation, and a $10,000 fine. The state differentiates between manslaughter by act (voluntary) and manslaughter by culpable negligence (involuntary), with the latter being the unintentional killing due to recklessness or grossly negligent behavior. If the victim is an elderly person, a disabled adult, a child, or an officer, the offense is elevated to a first-degree felony, with penalties increasing up to 30 years in prison.