Legal glossary

Real party in interest

Real party in interest: The person who owns the right being enforced in a lawsuit. In federal court, Federal Rule of Civil Procedure 17(a) requires an action to be prosecuted in the name of the real party in interest. Most states have a similar rule.

Real party in interest — an attorney meeting a client

What real party in interest means

Put simply, real party in interest is part of the working vocabulary of a civil case. The short definition above covers the usual meaning. Still, a specific rule, statute or contract can give it a narrower meaning. For that reason, check how it is used in your own documents.

Where real party in interest 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.

Read the source: Standing.

How to research the term

Start with the primary source. For example, if real party in interest appears in a federal rule, read the rule itself and its official notes. After that, check your court’s local rules and any standing orders from the judge. In addition, search recent decisions from your own state or federal district. They show how courts read real party in interest in practice. Because state rules often differ, our state procedures guide links to each state’s official rules. Above all, make sure the version you read is still in force.

You can read the current federal court rules online for free.

Related legal terms

  • Quash: to void or set aside, such as a subpoena or an indictment. Under Federal Rule of Civil Procedure 45(d)(3), the court must quash or modify a subpoena that, for example, fails to allow a reasonable time to comply or subjects a person to undue burden.
  • Qui tacet consentire videtur: latin maxim: "He who is silent appears to consent." It expresses a general idea, not a binding rule. In contract law, silence counts as acceptance only in narrow situations, such as when a person keeps offered benefits or past dealings make silence a reasonable sign of assent (Restatement (Second) of Contracts § 69).
  • Quiet title: a lawsuit to establish ownership of real property against other claims.
  • Quitclaim deed: a deed that transfers whatever interest the grantor has in a property, if any, without any promise that the grantor owns it or that the title is free of claims. Quitclaim deeds are often used between family members, to clear up title issues, or to transfer property into or out of a trust or entity.

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: 2026-10-24

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.