If you were hurt in Wyoming by someone else's conduct, you generally have four years from the date of the injury to file a personal-injury lawsuit. The deadline comes from Wyoming Statute section 1-3-105, and the clock starts on the date the harm occurred. Miss the window and the courthouse door closes, even if the underlying case is strong.
The four-year number is the rule most Wyoming injury searches return. The biggest trap is the one-year written notice requirement under the Wyoming Governmental Claims Act and the strict procedural rules under both the WGCA and the Wyoming Constitution for claims against governmental entities. The notice runs from accrual, and Wyoming courts enforce the WGCA's content and timing rules strictly. This post walks through what the four-year SOL really means in 2026, where the exceptions are, and the fact patterns we see trip people up most.
The default Wyoming PI window: four years under W.S. 1-3-105
Wyoming Statute section 1-3-105(a)(iv) sets a four-year statute of limitations for actions for injuries to the rights of the plaintiff not arising on contract and not specifically enumerated. It is the catch-all for the vast majority of Wyoming PI cases: car crashes, slip-and-falls, dog bites, premises liability, and most negligence claims.
The clock starts on the date the injury occurred. Wyoming recognizes a discovery rule for latent injuries in narrow categories under Olson v. A.H. Robins Co., 696 P.2d 1294 (Wyo. 1985) and successor cases: the limitation period begins to run when the plaintiff knew or should have known of the injury.
Wyoming is a fault-based auto-insurance state. The injured party's recovery generally runs through the at-fault driver's insurer or the claimant's own uninsured-motorist coverage.
Exception one: the Wyoming Governmental Claims Act one-year notice trap
If your injury involves a Wyoming governmental entity, the Wyoming Governmental Claims Act, W.S. chapter 1-39, applies. The WGCA requires a written claim filed within one year of the alleged act, error, or omission under W.S. section 1-39-113(a).
The claim must be filed with the governmental entity (and in the case of state claims, the State Auditor). The Wyoming Supreme Court has repeatedly held that the WGCA's content, timing, and presentment requirements are jurisdictional, not merely procedural, and substantial compliance is not a safe path.
The Wyoming Constitution, Article 16, Section 7, separately requires a certified itemized statement of the claim before any judgment may be rendered against a county or municipality. This constitutional presentment is sometimes overlooked, but Wyoming courts have enforced it.
The single most common Wyoming PI trap: a claimant injured by a city vehicle or on state property assumes the four-year SOL applies, contacts an attorney 14 or 18 months after the incident, and learns the one-year WGCA written claim has already run. The four-year general SOL never matters; the WGCA notice was the live deadline.
Exception two: medical malpractice
Wyoming medical-malpractice claims run on a different schedule under Wyoming Statute section 1-3-107: a two-year SOL from the date of the act, error, or omission, with a discovery extension capped by an outer bar. Failure to provide adequate notice or comply with the Medical Review Panel procedures under W.S. chapter 9-2 article 15 can affect the case.
Exception three: minors
Wyoming Statute section 1-3-114 tolls the SOL during minority for general PI claims. A child injured at age 10 has additional time after reaching the age of majority to file. The toll does NOT extend the WGCA one-year notice deadline; treat the WGCA notice as the operative limit and act within it regardless of the claimant's age.
What Wyoming's modified 51% comparative-fault rule means
Wyoming follows a modified comparative-fault rule with a 51% bar under Wyoming Statute section 1-1-109. A plaintiff 50% or less at fault recovers, reduced by the percentage of plaintiff fault. A plaintiff more than 50% at fault recovers nothing.
That 51% threshold is where Wyoming defense lawyers focus. Pushing fault from 50% to 51% ends the case.
A common Wyoming fact pattern that ends cases early
A pedestrian is struck by a county plow on a Cheyenne street in February. The pedestrian is treated and released, calls the county for damages, gets a "we'll look into it," and assumes the case is being processed. Fourteen months later, no resolution; the pedestrian retains an attorney; the attorney discovers the county was never given the one-year WGCA notice. The case is dismissed for lack of jurisdiction.
The takeaway: if any Wyoming governmental entity is potentially involved (state, county, city, school district, special district), treat the one-year WGCA notice as the operative limit and act within it, not the four-year general SOL.
Other Wyoming-specific PI rules worth knowing
Dog bites. Wyoming follows common-law rules requiring proof of the owner's knowledge of the dog's viciousness, or local ordinance liability where applicable. Four-year SOL.
Wrongful death. Two-year SOL under Wyoming Statute section 1-38-102. Standing under Wyoming Statute section 1-38-101. The two-year window is much shorter than the general PI four-year window, a common point of confusion.
Premises liability and slip-and-fall. Four-year SOL. The 51% modified-comparative bar applies. Wyoming retains traditional invitee/licensee/trespasser distinctions for duty.
Recreational use immunity. Wyoming Statute section 34-19-101 et seq. limits the liability of owners who open land for recreational use without charge, often relevant in outdoor-injury cases.
How the LawSensai Personal Injury Recovery Center helps with Wyoming matters
We built the Recovery Center to handle the day-one organizational work in a Wyoming PI case so that nothing falls through the cracks during the four-year window. We document the incident through a calm, save-and-resume intake, build a medical-and-evidence timeline, and surface every applicable deadline, including the one-year WGCA notice, the constitutional presentment requirement, the two-year medmal SOL, the two-year wrongful-death window, and the underlying W.S. 1-3-105 four-year window. When the matter is well-documented and ready, we route it to a verified personal-injury attorney licensed in Wyoming. Start your Wyoming intake here.
We are not a law firm and we do not give legal advice. We are the file-organization and deadline-surfacing layer that sits in front of a real attorney.
Personal injury statute of limitations in other states
Each state has its own SOL window, government-notice deadline, comparative-fault regime, and case-type quirks. The deep-dive posts here cover the highest-volume jurisdictions. The full LawSensai PI Recovery Center routes 50-state coverage at /personal-injury.
- Nebraska (4-year SOL, NPTCA 1-year notice)
- South Dakota (3-year SOL, slight-vs-gross)
- North Dakota (6-year SOL, 180-day notice)
- Kansas (2-year SOL, KTCA 120-day notice)
- Missouri (5-year SOL, pure comparative)
Informational only
LawSensai is not a law firm and does not provide legal advice. The information in this post is general and does not account for your specific facts. No attorney-client relationship is created by reading this post or by using the Personal Injury Recovery Center. Deadlines, exceptions, and procedural rules vary by case type and by the parties involved; verify your specific situation with a licensed attorney in Wyoming before relying on any window described here.
Last verified: 2026-06-03.