Rule 17.Plaintiff and Defendant; Capacity; Public Officers
Group IV: Parties · Last amended 2017 · Last verified July 14, 2026
In one sentenceRule 17 requires a civil action to be brought in the name of the real party in interest, lists who may sue without joining the person they represent, sets rules for determining a party's capacity to sue or be sued, and covers suits by or on behalf of minors, incompetent persons, and public officers.
(1)Designation in General. 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)Action in the Name of the United States or the District of Columbia for Another’s Use or Benefit. When an applicable statute so provides, an action for another’s use or benefit must be brought in the name of the United States or the District of Columbia.
(3)Joinder of the Real Party in Interest. 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 to sue or be sued 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 District of Columbia, except that:
(A)a partnership or other unincorporated association with no such capacity under the District of Columbia’s laws may sue or be sued in its common name to enforce a substantive right existing under the United States Constitution or laws; and
(B)28 U.S.C. §§ 754 and 959 (a) govern the capacity of a receiver appointed by a United States court to sue or be sued.
(1)With a Representative. The following representatives may sue or defend on behalf of a minor or an incompetent person:
(A)a general guardian;
(B)a committee;
(C)a conservator; or
(D)a like fiduciary.
(2)Without a Representative. A minor or 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.
Comments
2017 Amendments:
This rule is substantially similar to Federal Rule of Civil Procedure 17, as amended in 2007, but maintains the following local distinctions: 1) subsection (a)(2) includes suits in the name of the District of Columbia for the use or benefit of another; 2) “District of Columbia” is substituted for “state where the court is located” in subsection (b)(3); 3) “District of Columbia’s laws” is substituted for “that state’s law” in subsection (b)(3)(A); and 4) “in a United States court” is struck from subsection (b)(3)(B) to indicate that a federally appointed receiver can properly sue or be sued in the Superior Court in accordance with 28 U.S.C § 959.
In accordance with the 2007 federal amendments, former Rule 25(d)(2) has been moved to section (d) of this rule.
Comment:
Identical to Federal Rule of Civil Procedure 17 except for 4 changes: (1) Revision of the 2nd sentence in section (a) thereof to comprehend statutes authorizing suits by the District of Columbia for the use or benefit of another; (2) substitution of "District of Columbia" for "state in which the district court is held" in section (b); (3) substitution of "District of Columbia" for "such state" in the 1st exception clause of section (b); and (4) deletion of the limiting phrase "in a court of the United States" from the 2nd exception clause in section (b). This last modification was effected so as to insure that the suing or suable capacity of federally appointed receivers, who may sue and be sued in state courts, shall be determined as nearly as possible in conformity with applicable federal law under 28 U.S.C. §§ 754 and 959(a).
Plain-English Summary
Rule 17(a) requires a civil action to be brought in the name of the real party in interest — the person or entity entitled to the relief sought, not a stand-in with no stake in the outcome. The rule then lists common exceptions: an executor, administrator, guardian, bailee, trustee of an express trust, someone who contracted on another's behalf, or anyone else a statute authorizes can sue in their own name without joining the person they represent. A suit brought for someone else's benefit under the United States' or the District of Columbia's name follows the same principle when a statute calls for it. And if a case is challenged for not naming the real party in interest, Rule 17(a)(3) gives that party a reasonable time to ratify, join, or be substituted in — the case is not thrown out on the spot, and once that happens, the suit proceeds as though the real party in interest had brought it from the start.
Rule 17(b) determines who has the legal capacity to sue or be sued in the first place, and the answer depends on who is asking. An individual not suing or being sued in a representative role is judged by the law of their own domicile; a corporation is judged by the law of the place that created it; everyone else follows District of Columbia law, with two exceptions — an unincorporated association with no capacity under D.C. law can still sue or be sued in its own name to enforce a right under the federal Constitution or federal statutes, and a receiver appointed by a federal court has whatever capacity federal law gives it.
Rule 17(c) addresses parties who cannot manage their own legal affairs. A minor or an incompetent person who already has a general guardian, committee, conservator, or similar fiduciary can sue or defend through that representative. Without one, the person can proceed through a next friend or guardian ad litem, and the court itself must appoint a guardian ad litem, or issue some other protective order, whenever a minor or incompetent person is otherwise unrepresented in the case. Rule 17(d) closes with a simpler point: a public officer sued or suing in an official capacity can be identified by title rather than by name, though the court can still order the officer's name added if that becomes useful.
Frequently Asked Questions
What does "real party in interest" mean under DC Rule 17?
It means the action must be brought by the person or entity entitled to the relief sought under the substantive law, not by someone with no real stake in the outcome. Rule 17(a) lists specific representatives, like executors and trustees, who can sue in their own name instead.
Can a trustee sue in their own name instead of the beneficiary's?
Yes. Rule 17(a)(1)(E) lists a trustee of an express trust among those who may sue without joining the person for whose benefit the action is brought.
How is a corporation's capacity to sue or be sued determined?
Rule 17(b)(2) looks to the law of the jurisdiction under which the corporation was organized, rather than District of Columbia law generally.
Who can sue on behalf of a child or someone who can't manage their own legal affairs?
Rule 17(c)(1) allows a general guardian, committee, conservator, or similar fiduciary to sue or defend for them. Without one, Rule 17(c)(2) allows a next friend or guardian ad litem to step in, and requires the court to appoint a guardian ad litem or issue another protective order if the person is otherwise unrepresented.
Can I sue a government official by their job title instead of their name?
Yes. Rule 17(d) allows a public officer who sues or is sued in an official capacity to be designated by title rather than by name, though the court may still order the officer's actual name added to the case.
Source & verification. Rule text and official Comments are
reproduced verbatim from the District of Columbia Superior Court Rules of Civil
Procedure, adopted by the Superior Court of the District of Columbia. Last verified July 14, 2026.
· Official source
Also known as:dc real party in interest ruledc guardian ad litem for minor lawsuitcapacity to sue or be sued dcsuing public officer by title dc superior courtnext friend lawsuit dc