Global commerce and cross-border litigation continue to drive the need for Ontario courts to recognize and enforce foreign court orders and arbitral awards. Whether arising from complex commercial disputes, international fraud cases, or cross-jurisdictional insolvencies, parties routinely turn to the Commercial List to give effect to foreign judgments and orders.

Statutory & Common-Law Pathways

Ontario provides streamlined statutory procedures for certain foreign judgments, notably via reciprocal enforcement statutes. For example, the Reciprocal Enforcement of Judgments (UK) Act (REJA) allows direct registration of UK judgments in Ontario. A key advantage is an extended limitation period (typically six years under REJA instead of two years at common law). 

Absent a specific statute, Ontario enforces foreign judgments under traditional common law rules. The Supreme Court of Canada’s comity-driven framework generally makes foreign final monetary judgments readily enforceable in Ontario, provided the applicant meets basic criteria. The core requirements are:

• Jurisdiction: The foreign court must have properly assumed jurisdiction over the case. Canadian conflicts rules govern this assessment and are typically satisfied where a real and substantial connection existed between the foreign jurisdiction and the dispute or the defendant, or where the defendant was present in or attorned to the foreign court. Importantly, Ontario courts do not require any connection between the dispute or defendant and Ontario itself for enforcement purposes. As the Supreme Court held in Chevron Corp v Yaiguaje, the enforcing court’s jurisdiction rests simply on service on the defendant in Ontario; the underlying claim need not have any independent Ontario nexus. 
• Finality: The judgment must be final and conclusive in the foreign jurisdiction. An outstanding appeal or an interlocutory nature can undermine enforceability. In practice, Ontario courts treat a judgment as final once the parties have exhausted ordinary appeals in the foreign court or the time to appeal has expired. 
• Monetary Judgment: At common law, enforcement was traditionally limited to judgments for a definite sum, excluding equitable or injunctive relief. That approach has since evolved (see Non-Monetary Orders below), but for monetary judgments, Ontario courts will not revisit the merits. They enforce the amount awarded, along with any applicable post-judgment interest, either under Ontario law or as set by the originating jurisdiction, depending on the circumstances.
• Limitation Period: Ontario’s basic limitation period for bringing an action to recognize a foreign judgment is two years. The Court of Appeal has confirmed this two-year clock starts only once the foreign judgment is final (i.e., when appeals conclude or the appeal period ends). 

Defences to Enforcement 

Once jurisdiction and finality are established, Ontario courts will enforce foreign monetary judgments almost as of right, subject only to three narrow defences from the Beals v Saldanha framework: 

• Fraud: Fraud is a defence only where the alleged misconduct is extrinsic to the original proceeding, such as the concealment of the action itself, suppression of material facts, or judicial corruption. It does not extend to perjury or misrepresentation that could have been addressed during the foreign litigation. Ontario courts will not revisit the merits of the case and will entertain this defence only where the debtor can produce new, material evidence that could not reasonably have been discovered earlier.
• Denial of Natural Justice: This applies where the foreign process was fundamentally unfair; for example, if the defendant received no notice of the proceedings or was denied an opportunity to participate meaningfully. In Agrest v Pekker, the Court of Appeal upheld enforcement of a Russian default judgment after finding that the debtor had been properly notified under Russian law and had access to appeal mechanisms. Ontario courts will assess whether the foreign procedure met basic Canadian standards of fairness, including independent adjudication and the right to be heard.
• Public Policy: Public policy operates as a defence only in exceptional cases where the foreign judgment is contrary to Ontario’s fundamental values or legal order. This includes judgments enforcing penal, revenue, or quasi-criminal laws of another state, or those tainted by serious corruption or injustice. The Supreme Court in Beals, and more recently in Eurobank Ergasias SA v Bombardier, confirmed that only judgments truly repugnant to core principles of justice and morality will be denied recognition on this basis. Courts apply this defence narrowly and with restraint.

No other defenses are available to resist enforcement. Differences between foreign law and Ontario law, the absence of reciprocity, or allegations of factual or legal error in the original proceeding are not relevant. The Ontario court will not revisit the merits of the case, as the doctrine of res judicata bars any attempt to relitigate matters already decided.

Enforcement of Non-Monetary Foreign Judgments 

Since the Supreme Court’s decision in Pro Swing Inc v Elta Golf Inc, Canadian courts now recognize that non-monetary foreign judgments, such as injunctions and declaratory orders, may be enforced if they are final, clear, and not penal in nature. Ontario courts have since enforced permanent injunctions from US courts, such as in Dish v Shava and Blizzard v Simpson, where the orders met the Pro Swing criteria.

However, foreign interlocutory orders, especially asset-freezing injunctions such as Worldwide Freezing Orders, remain difficult to enforce directly. Because such orders lack finality and may later be varied, Ontario courts have been reluctant to recognize them outright. Instead, creditors commonly apply for a local Mareva injunction, which allows Ontario courts to freeze assets in aid of foreign proceedings. While this route imposes a higher threshold, requiring a strong prima facie case, a real risk of dissipation, and proof of assets in or connected to Ontario, courts have become increasingly flexible, including in cases involving digital or offshore assets. Even where no local assets are immediately known, courts may grant a Mareva if the defendant is subject to Ontario’s jurisdiction.

Despite these developments, direct enforcement of foreign interlocutory orders remains rare. The prudent course, if you have a foreign interim order (such as a freezing injunction) and need to effect it in Ontario, is to bring an urgent application on the Commercial List for a Mareva injunction mirroring the foreign order.

Finally, it is important to note this discussion applies to court-issued judgments. The recognition and enforcement of arbitral awards are governed by a separate legal regime under Ontario’s International Commercial Arbitration Act. For a detailed overview of that framework, see our related blog post.