Service of process in Wyoming
In Wyoming, the summons and complaint are served within the state by the county sheriff, undersheriff, or deputy, or by any non-party adult appointed for that purpose by the clerk; the clerk may also serve by registered or certified mail, and service by publication is available in defined circumstances. Under the current Rule 4(m), service must be completed within 90 days of filing or the action may be dismissed without prejudice absent good cause. Wyoming has not adopted the UIDDA.
ProcessServerState provides procedural-information-only summaries of state process-server rules. This is not legal advice. Service of process is a critical step in litigation — if you fail to serve correctly, your case can be dismissed. For complex or contested matters, consult a licensed attorney or a court self-help center. Not affiliated with any court or sheriff's office.
Is a license required in Wyoming?
No statewide process-server license. Service within the state is by the county sheriff/undersheriff/deputy, or by any non-party adult appointed for that purpose by the clerk at the requesting party's request.
Who may serve process in Wyoming?
- County sheriff
- Any non-party adult (18+)
- Certified / registered mail
- Publication (by court order)
Service deadline (Wyoming)
Under the current Wyo. R. Civ. P. 4(m), service must be made within 90 days after the complaint is filed or the court may dismiss without prejudice, absent good cause. (The pre-2017 rule used 120 days; older aggregator pages reflecting 120 days are stale.)
UIDDA: Wyoming has not adopted the UIDDA; out-of-state subpoenas follow a non-UIDDA process.
Sheriff / Marshal civil-process route
Civil-process fees are set by each county and listed on the local sheriff's civil-process page. Not all counties publish a fee schedule — confirm with the county where service will be made.
Statute / Rule citation
Wyo. R. Civ. P. 4 (Summons)
Interstate service from Wyoming
Wyoming has not adopted the UIDDA. Out-of-state subpoenas are domesticated through a non-UIDDA process, and service of an initial summons across state lines follows the receiving state's rules.
Sources for Wyoming
Other states with no license requirement
Check a different state
Verified against Wyoming primary sources on June 16, 2026. Read how we verify on our methodology page, or browse every citation in the source manifest.
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ProcessServerState provides procedural-information-only summaries of state process-server rules. This is not legal advice. Service of process is a critical step in litigation — if you fail to serve correctly, your case can be dismissed. For complex or contested matters, consult a licensed attorney or a court self-help center. Not affiliated with any court or sheriff's office.