Self Defense
ORC 2901.05 and 2901.09 — what the state has to prove
Two changes in recent years reshaped this entirely, and both went the same direction. One moved the burden of proof. The other removed the duty to retreat. Anything written about Ohio self defense before 2019 describes a different rule.
Who handles this in Ohio: Ohio State Bar Association lawyer referral; and legal aid programs and the state offices, listed in the Ohio directory.
You do not prove self defense. The state disproves it. Once there is evidence at trial that tends to support acting in self defense, defense of another, or defense of a residence, the prosecution must prove beyond reasonable doubt that you did not. That is the opposite of the old rule, where the burden sat on the defendant.
There is no duty to retreat before using force anywhere you lawfully have a right to be. The statute goes further than removing the duty: it tells the trier of fact not to consider the possibility of retreat at all when weighing whether the force was reasonably believed to be necessary.
- The rule reaches self defense, defense of another, and defense of a residence.
- It applies anywhere you are lawfully present, not only at home.
- Being somewhere unlawfully takes you outside it.
- Removing the duty to retreat does not remove the requirement that the belief in the need for force was reasonable.
Separately there is a presumption. Where the person that force was used against was unlawfully entering, or had unlawfully entered, the residence or the occupied vehicle of the person using it, self defense is presumed. That presumption does not apply where the other person had a right to be there or lived there, or where the person using force was themselves there unlawfully.
This section states the law. It does not tell you when to act. Every one of these turns on facts a court finds afterwards, including what a reasonable person would have believed at that moment. Nothing here is a green light, and no page can tell you what a specific situation calls for.
Stand your ground came in through Senate Bill 175, effective April 2021. The burden shift came earlier, through House Bill 228, in 2019. Both are now in the sections cited above.
Sources for this section (2)
- ORC 2901.05 — Burden of proof, and the self defense presumption
- ORC 2901.09 — No duty to retreat where you lawfully are
Legal information, not legal advice. Verified as of September 2026. Applying it to a particular situation is the work of a licensed Ohio attorney.