Muskellunge season & limits in Ontario Zone 4

Closed today Opens in 5 days, on June 20, 2026. Do not target or keep this species before the season opens unless an official exception says otherwise.

The rule

In Ontario Zone 4, muskellunge season is: the third Saturday in June to December 15. The limit is S-1 / C-0 (sport / conservation licence). Size: Must be greater than 102 cm. Multiple waterbody exceptions override this zone-wide rule.

Source: Official Ontario Zone 4 regulations, 2026

What this answer means on the water

The Zone 4 rule is the default answer for muskellunge, not a promise that every lake, river, sanctuary, or stocked water follows the same rule. Before keeping fish, check the exact waterbody name, any exception table, the licence class you are fishing under, and the size notes above.

TackleDex is built for that last-mile check: open the app at the launch, verify the species and zone, then keep the answer with your private catch log instead of guessing from memory.

Fine details that can get you in trouble

Waterbody exceptions, sanctuaries, and special closures can override this zone-wide answer.
Check the exact Fisheries Management Zone if the lake or river sits near a boundary.
Sport and conservation licence limits are different; possession limits still apply after you leave the water.
Must be greater than 102 cm
Multiple waterbody exceptions override this zone-wide rule
Opening and closing dates can depend on weekends, not just fixed calendar dates.

Standing on the water? TackleDex tells you instantly whether muskellunge is open today for exactly where you are.

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Instant season & limit answers for any Ontario water, your private FishDex, and stocking alerts.

Waterbody exceptions can override the zone-wide rule. Confirm on Ontario.ca before keeping fish.

Muskellunge season & limits in Ontario Zone 4

The rule

What this answer means on the water

Fine details that can get you in trouble

Muskellunge in other zones