Skip to Main Content

Fed. R. Civ. P. 17 — Plaintiff and Defendant; Capacity; Public Officers

The Federal Rule Book
Federal Rules of Civil Procedure
By Florida Justice · Phillips, Hunt & Walker

Fed. R. Civ. P. 17 — Plaintiff and Defendant; Capacity; Public Officers


Plain English

Rule 17 answers a basic question: who is allowed to be the named party in a lawsuit? A case must be brought by the real party in interest — the person or entity who actually owns the claim — though representatives like executors, administrators, guardians, and trustees can sue in their own names. The rule also sets capacity to sue or be sued (for an individual, the law of their domicile; for a corporation, the law where it was organized). And it protects minors and incompetent persons: they sue through a guardian, next friend, or guardian ad litem, and the court must appoint a guardian ad litem to protect anyone who is unrepresented. Importantly, a case can’t be dismissed for naming the wrong party until a reasonable time is allowed to ratify, join, or substitute the right one.

Key Cases & Authority

  • Fed. R. Civ. P. 17(a)(1) — An action must be prosecuted in the name of the real party in interest.
  • Fed. R. Civ. P. 17(a)(3) — A court may not dismiss for failure to name the real party in interest until, after objection, a reasonable time has been allowed to ratify, join, or substitute.
  • Fed. R. Civ. P. 17(c) — The court must appoint a guardian ad litem or issue another appropriate order to protect an unrepresented minor or incompetent person.

Florida Parallel

Florida’s parallel is Fla. R. Civ. P. 1.210 — Parties.

About this rule walkthrough

Part of The Federal Rule Book, hosted by John M. Phillips — Board Certified Civil Trial Lawyer, Court TV analyst, admitted in 8 states + 9 federal districts + SCOTUS.

Free consultation: (904) 444-4444 · About John Phillips

Educational only — not legal advice.

Rule Text (verbatim from the Florida Supreme Court)

(a) Real Party in Interest. (1) An action must be prosecuted in the name of the real party in interest. The following may sue in their own names without joining the person for whose benefit the action is brought: (A) an executor; (B) an administrator; (C) a guardian; (D) a bailee; (E) a trustee of an express trust; (F) a party with whom or in whose name a contract has been made for another’s benefit; and (G) a party authorized by statute. (2) When a federal statute so provides, an action for another’s use or benefit must be brought in the name of the United States. (3) The court may not dismiss an action for failure to prosecute in the name of the real party in interest until, after an objection, a reasonable time has been allowed for the real party in interest to ratify, join, or be substituted into the action. After ratification, joinder, or substitution, the action proceeds as if it had been originally commenced by the real party in interest.

(b) Capacity to Sue or Be Sued. Capacity is determined as follows: (1) for an individual who is not acting in a representative capacity, by the law of the individual’s domicile; (2) for a corporation, by the law under which it was organized; and (3) for all other parties, by the law of the state where the court is located, except that a partnership or other unincorporated association with no such capacity under that state’s law may sue or be sued in its common name to enforce a substantive right existing under the United States Constitution or laws, and 28 U.S.C. §§ 754 and 959(a) govern the capacity of a receiver appointed by a United States court.

(c) Minor or Incompetent Person. (1) A general guardian, committee, conservator, or like fiduciary may sue or defend on behalf of a minor or an incompetent person. (2) A minor or an incompetent person who does not have a duly appointed representative may sue by a next friend or by a guardian ad litem. The court must appoint a guardian ad litem — or issue another appropriate order — to protect a minor or incompetent person who is unrepresented in an action.

(d) Public Officer’s Title and Name. A public officer who sues or is sued in an official capacity may be designated by official title rather than by name, but the court may order that the officer’s name be added.

Educational reference. Educational only — not legal advice.

What this rule means in plain English

Rule 17 requires suit by the real party in interest, sets capacity to sue or be sued, and requires the court to protect unrepresented minors and incompetent persons through a guardian ad litem.

X