- What it is:protect another person.
- Standard:reasonable belief, proportionate.
- Deadly force:death/great-harm threat.
- Outside home:duty to retreat applies.
Minnesota law allows you to use reasonable force to defend another person from harm — generally to the same extent that person could have defended themselves. Defense of others closely tracks self-defense: the force must be reasonable, proportionate to the threat, and based on a reasonable belief that intervention was necessary. Because these situations unfold fast and are judged on what was reasonable in the moment, the details matter enormously. Here's how it works.
The Basic Rule
You may use reasonable force to protect another person from what you reasonably believe is an unlawful threat of harm. The general principle is that you can step into the shoes of the person being threatened — using the force they would have been justified in using to protect themselves.
What this means for you: Defending someone else isn't automatically a crime, even if force was used. If the person you protected could lawfully have defended themselves, your intervention may be justified too.
It Tracks Self-Defense
Defense of others generally follows the same framework as self-defense. That means the familiar elements apply: the force must be a response to an apparent threat, you must not be the aggressor, your belief in the need for force must be reasonable, and the force must be proportionate — with the most serious (deadly) force reserved for situations involving a threat of death or great bodily harm.
Under current Minnesota law, defending another person generally follows the same duty-to-retreat principles that apply to self-defense outside the home. Proposals to adopt a broader "stand your ground" rule (eliminating the duty to retreat) have been introduced in the Legislature but have not been enacted as of 2026, so the existing framework still applies.
The Reasonable-Belief Standard
A central question is whether your belief that force was necessary to protect the other person was reasonable. This is judged from the perspective of a reasonable person in the same situation, considering what you knew and perceived at the time — not with the benefit of hindsight. A genuine and reasonable belief can justify the use of force even if it later turns out the threat was less than it appeared.
What this means for you: The case often turns on what you reasonably perceived in the moment. Your perception of the threat to the other person, and why intervention seemed necessary, is at the heart of the defense.
Proportionality
As with self-defense, the level of force must be proportionate to the threat. Using force far beyond what the situation required can take the conduct outside the defense. Deadly force is reserved for situations involving an apparent threat of death or great bodily harm.
How It Connects to Self-Defense
Defense of others is the close cousin of self-defense, and the two are analyzed under the same general principles. It can also intersect with defense of dwelling and property when the protection of a person overlaps with protection of a home. Many incidents involve more than one of these justifications at once.
Updated May 18, 2026 · Law verified as of June 17, 2026. This article is general information about Minnesota law, not legal advice.
Frequently Asked Questions
Can I use force to protect someone else in Minnesota?
Yes, you may use reasonable force to defend another person from an unlawful threat of harm — generally to the same extent that person could have defended themselves.
Is defense of others the same as self-defense?
It closely tracks self-defense and is analyzed under the same general framework: reasonable belief, proportionate force, not being the aggressor, and deadly force only against a threat of death or great bodily harm.
What if I was wrong about the threat?
The standard is reasonable belief judged in the moment. A genuine and reasonable belief that intervention was necessary can justify force even if the threat later proved less than it appeared.
Can I use deadly force to protect someone?
Only in situations involving an apparent threat of death or great bodily harm, and only where it was reasonable and proportionate. Outside the home, current Minnesota law generally includes a duty to retreat if reasonably possible before using deadly force.
Does it matter if I started the confrontation?
Yes. As with self-defense, being the aggressor generally undermines the justification. The defense applies to protecting someone from an unlawful threat, not to escalating a fight.
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Read the guideThe information on this article is for general informational purposes only and is not legal advice. Reading this article does not create an attorney-client relationship.