Definition
Kidnaping (also spelled kidnapping) is the unlawful taking, seizing, or carrying away of a person by force, threat, fraud, or deception, against that person's will or without lawful authority. In modern criminal law, the offense typically requires both an unlawful seizure of a person and some form of movement or confinement, though the degree of movement required varies by jurisdiction.
At common law, the core offense was understood as the forcible abduction of a person from their own country and transportation to another, a framing that reflected the crime's origins as an aggravated form of assault upon personal liberty. Modern statutes have substantially broadened this conception. Most contemporary definitions do not require transportation across national or even state lines; confinement within a room or vehicle may suffice, provided the restraint is substantial and unlawful.
The offense exists along a spectrum of severity. Aggravating factors — such as holding the victim for ransom, using a weapon, causing bodily harm, or targeting a minor — typically elevate the offense to a higher grade or a distinct crime.
Common Language
Wiktionary: "Alternative spelling of kidnapping."
Webster's 1913: Not separately defined; the term appears in connection with abduction and the forcible taking of persons.
The common and legal meanings are largely aligned in their basic sense — both describe the unlawful seizure of a person. The meaningful gap is one of precision: ordinary usage treats kidnaping as simply "taking someone against their will," while the legal definition carries specific structural requirements (unlawfulness, restraint or movement, intent) that determine whether the crime has been committed and at what level of severity. Researchers should not assume everyday usage maps cleanly onto statutory elements.
Common Confusion
Kidnaping and abduction are often used interchangeably in both popular and historical legal sources, but they are not always synonymous. Historically, abduction carried a narrower meaning focused on the taking of women or children from guardians, with a marital or sexual dimension in some formulations. Modern statutes in many jurisdictions have collapsed the distinction, using kidnapping or abduction to describe overlapping conduct. Researchers working in historical sources should check the specific operative definition rather than treating the terms as equivalent.
Kidnaping should also be distinguished from unlawful restraint or false imprisonment. False imprisonment involves confinement without lawful authority but typically does not require movement; kidnaping generally requires some element of asportation (carrying away) or more substantial confinement, and is treated as the more serious offense.
Core Elements
Modern kidnaping statutes generally require:
1. An act of seizure, confinement, or carrying away of a person
2. By force, threat, deception, or without lawful authority
3. Against the victim's will or, in the case of a minor or incapacitated person, without the consent of a lawful guardian
4. With a specific intent — commonly, intent to hold for ransom, to facilitate another crime, to inflict harm, or to exercise unlawful control
The asportation requirement — how far the victim must be moved — has been a persistent doctrinal fault line. Some jurisdictions retain a meaningful distance requirement; others hold that any movement incidental to an accompanying offense (such as robbery) does not independently constitute kidnaping.
Recognized Forms
/SUBTYPES
Simple kidnaping: The base offense, involving unlawful seizure or confinement without aggravating circumstances.
Aggravated kidnaping: Elevated offense triggered by factors such as ransom demands, use of a deadly weapon, serious bodily injury to the victim, or the victim being a minor.
Parental kidnaping: A distinct statutory category in most U.S. jurisdictions, addressing a parent's unlawful removal or retention of a child in violation of a custody order. Governed at the federal level by the Parental Kidnapping Prevention Act and addressed in the Family Law Encyclopedia entry cross-referenced above.
Federal kidnaping: Under the Lindbergh Act (18 U.S.C. § 1201), federal jurisdiction attaches when the victim is transported across state lines or international borders, or when other federal nexus elements are met.
Why It Matters in Research
Spelling variation is a genuine research trap. Kidnaping (single p) and kidnapping (double p) coexist in statutes, case law, and secondary sources with no consistent pattern. The single-p spelling appears in federal statutes and many older state codes; the double-p spelling dominates modern usage and some state codes. Keyword searches in legal databases must account for both forms, or results will be incomplete.
Historical sources — including Anderson's and its contemporaries — define the offense primarily around international transportation, reflecting the common law's original geographic emphasis. Researchers applying these definitions to modern statutes will find them underinclusive: contemporary kidnaping law covers purely local confinement and has largely abandoned the cross-border requirement as an element of the base offense.
The asportation question is an ongoing source of doctrinal variation and appellate litigation, particularly when kidnaping charges are brought in connection with robbery, sexual assault, or carjacking. Researchers analyzing whether a kidnaping conviction can stand alongside a conviction for an underlying felony should consult jurisdiction-specific precedent — this area is not uniform.
For family law researchers, parental kidnaping occupies a distinct doctrinal space that intersects custody enforcement, the Uniform Child Custody Jurisdiction and Enforcement Act, and federal extradition considerations. The Family Law Encyclopedia entry above is the recommended starting point.
Historical Dictionary Support
Anderson's defines kidnaping as "the forcible abduction or stealing away of a man, woman, or child from his or her own country, and sending or taking him or her into another country," and treats it as equivalent to abduction. This definition captures the common law core but reflects a markedly narrower conception than modern law recognizes. The cross-border element, central to Anderson's formulation, is now a sentencing or jurisdictional factor rather than an element of the base offense in most U.S. statutes.
Anderson's also notes the federal offense of bringing into the United States any person "inveigled or kidnaped" abroad with intent to hold them to involuntary servitude — an early federal kidnaping statute reflecting the crime's intersection with trafficking and forced labor. This framing anticipates modern anti-trafficking law and is historically significant for researchers studying the development of federal criminal jurisdiction over persons.
The historical dictionaries generally agree on the abduction-kidnaping equivalence, though this equivalence has eroded in modern statutory law. What historical sources largely omit: the asportation debate, the emergence of parental kidnaping as a distinct category, and the dramatic expansion of the offense to cover intrastate confinement without international or even interstate movement.
Jurisdictional Note
Federal and state kidnaping offenses operate in parallel and differ significantly in their jurisdictional triggers and penalty structures. State law governs most prosecutions; federal jurisdiction under 18 U.S.C. § 1201 generally requires interstate or international movement of the victim. Parental kidnaping is addressed by a separate federal statute and is a recognized exception to the general rule that domestic relations matters are left to state law.
Encyclopedia Cross-Reference
Kidnapping and Unlawful Restraint — The Law Mind Criminal Law Encyclopedia (criminal_42)
Child Custody — Interference with Custody and Parental Kidnapping — The Law Mind Family Law Encyclopedia (family_82)