Illinois regulations
Muskie (Muskellunge) Regulations in Illinois 2026
Illinois Muskie regulations as of 2026-05-08: Gear Excluded; Daily bag 1 fish/day; Min size 36 inches. Sourced from DNR.
Rules (3)
Illinois statewide
- Daily bag
- 1 fish/day
- Min size
- 36"
No More Than 1 Muskellunge Or Muskellunge Hybrid (Tiger Muskie) May Be Taken Per Day, Except As Specified Under Site Specific Regulations. All Muskellunge And Muskellunge Hybrids (Tiger Muskie) Taken Must Be 36˝ In Total Length Or Longer, Except As Specified Under Site Specific Regulations.
Mississippi River (Between Il & Mo)
- Gear
- Excluded
Excludes endangered and threatened species and the following game species: Crappie, Channel/Blue/Flathead Catfish, Rock Bass, Warmouth, White/Yellow/Striped/Hybrid Striped Bass, Trout, Largemouth/Smallmouth/Spotted Bass, Muskellunge, Northern Pike, Chain/Grass Pickerel, Walleye, Sauger, Paddlefish
Also known as
Muskie is also called Muskie (Muskellunge), Muskellunge, Tiger Muskellunge, Tiger Muskie, musky, muskellunge. Anglers in different regions use different names for the same fish, and the rules on this page apply to all of them in Illinois.
Frequently asked questions
When is Muskie season in Illinois?
Muskie season in Illinois is set by DNR. Some zones may have specific open windows; see the rule table above.
What is the size limit for Muskie in Illinois?
Minimum size for Muskie in Illinois is 36 inches, per DNR. Slot limits or maximum sizes may apply in some zones.
What is the daily bag limit for Muskie in Illinois?
Daily bag limit for Muskie in Illinois is 1 fish/day, per DNR.
Official sources cited
- https://www.eregulations.com/illinois/fishing/regulation-information
- https://www.eregulations.com/illinois/fishing
Reference only. Regulations change frequently, often mid-season. Always verify with DNR before keeping a catch. Last verified .