Citizen
Citizen: A member of a nation or state who owes it allegiance and is entitled to its protection. Under the Fourteenth Amendment, all persons born or naturalized in the United States, and subject to its jurisdiction, are citizens of the United States and of the state where they reside.

What citizen means
In short, citizen is a term you will meet in court papers, rules and legal research. The definition above gives its usual meaning in American civil practice. However, the exact meaning can depend on the rule, statute or court decision that uses it. So it helps to read the term in context.
Where citizen comes up
The term is used across many kinds of cases. For example, you may see it in pleadings, motions and court orders. To see it in context, browse the motions and procedures library or the Learn the Law topics.
How to research the term
First, read the term where it actually appears. A rule, statute or court decision may define it for its own purposes. Next, check whether your court has a local rule that uses citizen in a special way. Then look at recent decisions from courts in your jurisdiction. They show how judges apply the term today. Also, remember that state law can differ from federal law. For that reason, use our state procedures guide to find your state’s rules. Finally, confirm every source is current before you rely on it.
You can read the current federal court rules online for free.
Related legal terms
- Caption: the heading of a court document identifying the court, the parties, the case number and the document title.
- Chain of title: the sequence of recorded transfers of an interest in property from earlier holders to the current one.
- Class action: a lawsuit in which one or more people sue or are sued as representatives of a larger group.
- Clerk of court: the court officer who maintains records, accepts filings and performs duties assigned by the rules, such as entering defaults.
Why precise terms matter
Legal words often look like everyday words, but they can carry a precise meaning. Because of that, a small misreading can change how you understand a deadline, a duty or a right. Our glossary keeps each definition short and links it to the procedures where it matters.
Sources
Sources last reviewed: 2026-10-23
Lawtopolis provides legal information and education, not legal advice. Using this site does not create an attorney-client relationship. Laws and court rules vary by jurisdiction and change over time; verify every authority against the official source and consult a licensed attorney in your jurisdiction about your situation.
