Arizona State Court Third-Party Complaint (Impleader)
Filing attorney or self-represented party: [NAME]
State Bar of Arizona attorney ID (if applicable): [____________]
State Bar of Arizona law firm ID (if applicable): [____________]
Party represented: Defendant / Third-Party Plaintiff [NAME]
Address: [________________________________]
Telephone: [________________] · Email: [________________]
IN THE SUPERIOR COURT OF THE STATE OF ARIZONA
IN AND FOR THE COUNTY OF [________________________________]
| Party | Role |
|---|---|
| [PLAINTIFF NAME] | Plaintiff |
| v. | |
| [DEFENDANT NAME] | Defendant / Third-Party Plaintiff |
| [THIRD-PARTY DEFENDANT NAME] | Third-Party Defendant |
Case No.: [____________________]
DEFENDANT'S THIRD-PARTY COMPLAINT
Assigned judge (if known): [____________________]
Defendant [DEFENDANT NAME] brings this third-party complaint against nonparty [THIRD-PARTY DEFENDANT NAME] under Ariz. R. Civ. P. 14(a)(1). Defendant alleges that the third-party defendant is or may be liable to Defendant for all or part of Plaintiff's claim against Defendant for the reasons stated below.
I. Rule 14 Filing Basis
- Defendant served its original answer on [__/__/____].
- ☐ This complaint is filed no more than 10 days after service of that answer. ☐ More than 10 days have passed; the Court granted Defendant's motion for leave to file this complaint by order dated [__/__/____], attached as [________].
- The claim asserted here is dependent on Defendant's potential liability to Plaintiff because [explain how the third-party defendant may owe Defendant all or part of that liability: ________________________________].
II. Parties and Jurisdiction
- Plaintiff [NAME] asserts [identify the relevant claim] against Defendant [NAME] in this action.
- Third-Party Defendant [NAME] is not presently a party to this action. Its relationship to Defendant and the underlying claim is [________________________________].
- The Court has jurisdiction over the third-party claim because [state facts and legal ground, or why existing jurisdiction needs no new support: ________________________________].
- The basis for this Court's personal jurisdiction over the third-party defendant and venue is [state supporting facts and authority: ________________________________].
III. Factual Allegations
- Plaintiff alleges that Defendant is liable for [summarize the underlying claim: ________________________________]. Defendant [admits / denies / lacks knowledge of] that allegation in its answer.
- The third-party defendant [describe specific conduct, promise, relationship, or obligation: ________________________________].
- The facts connecting that conduct or obligation to Plaintiff's claim against Defendant are [________________________________].
- Any additional material facts are [________________________________].
IV. Third-Party Claim for Relief
- Claim — [NAME THE CAUSE OF ACTION]: [State the legal basis and material facts showing why the third-party defendant is or may be liable to Defendant for all or part of Plaintiff's claim: ________________________________].
- The requested measure of relief against the third-party defendant is [amount, allocation, or other relief and its basis: ________________________________].
- ☐ Additional supported third-party claim: [state its separate basis and facts: ________________________________].
V. Request for Relief
Defendant requests judgment against the third-party defendant for:
- [All or the specified part of any liability Defendant incurs on Plaintiff's claim, with the legal basis stated above: ________________________________].
- [Any additional costs, fees, interest, or other relief for which a legal or contractual basis is pleaded: ________________________________].
- Such further relief as the Court finds appropriate.
Dated: [__/__/____]
________________________________
[ATTORNEY OR SELF-REPRESENTED PARTY NAME]
[STATE BAR NUMBER, IF APPLICABLE]
[ADDRESS] · [EMAIL] · [TELEPHONE]
For Defendant [NAME]
Certificate of Service on Existing Parties
I certify that on [__/__/____], I served this third-party complaint on the existing parties under Ariz. R. Civ. P. 5(c) as follows:
| Person served | Address or authorized electronic destination | Method and date |
|---|---|---|
| [________________] | [________________] | [________________] |
| [________________] | [________________] | [________________] |
________________________________
[NAME OF PERSON EFFECTING SERVICE]
Sources and References
About this template
- Last updated
- October 28, 2026
- Citations checked
- October 10, 2026
- Jurisdiction
- Arizona
- Category
- Litigation & Court Documents
Legal authority
- Ariz. R. Civ. P. 14(a)(1) (third-party complaint and 10-day leave gate)
- Ariz. R. Civ. P. 8(a) (claim for relief)
- Ariz. R. Civ. P. 4.1(b) (summons and pleading served together in Arizona)
- Ariz. R. Civ. P. 5(c) (service on existing parties)
- Ariz. R. Civ. P. 11(a)(1) (signature)
- Ariz. R. Civ. P. 5.2(a)(1) (first-page filer identification above the caption)
These are the filings that drive a lawsuit through the system: complaints, answers, motions, briefs, discovery requests and responses, and post-judgment papers. Each has its own format requirements under federal and state procedural rules, and each has a deadline that cannot be missed without consequences. Clean, procedurally correct filings move a case forward; sloppy ones invite motions to strike, amended responses, and avoidable delays.
Not legal advice
This template is provided for informational purposes. We recommend having an attorney review any legal document before signing, especially for high-value or complex matters.
Checked against the law it cites
A reviewer verified this template's legal citations against the official source on October 10, 2026.
Ariz. R. Civ. P. 5.2(a)(1) (checked October 28, 2026): "the filing attorney’s or self-represented litigant’s name, address, telephone number, and email address"
Ariz. R. Civ. P. 14(a)(1) (checked October 10, 2026): "A defending party may, as a third-party plaintiff, serve a summons and third-party complaint on a nonparty who is or may be liable to it for all or part of the claim against it."
Ariz. R. Civ. P. 14(a)(1) (checked October 10, 2026): "the third-party plaintiff must, by motion, obtain the court’s leave if it files the third-party complaint more than 10 days after serving its original answer."
Ariz. R. Civ. P. 8(a) (checked October 10, 2026): "a short and plain statement of the claim showing that the pleader is entitled to relief"
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