Utah, known for its stunning landscapes and vibrant culture, harbors some peculiar laws that might raise eyebrows or bring a smile to your face. From outdated statutes to unique regulations, here’s a curious exploration of some of weird utah laws that add an interesting twist to the state’s legal landscape.

1. No Whistling Near Fish

Believe it or not, in Utah, it’s illegal to whistle while near a fish. This rather whimsical law is derived from a bygone era when people believed that fish could be scared away by whistling. While it might seem odd today, this law remains in the books as a quirky reminder of Utah’s past.

2. Forbidden to Cause a Catastrophe

Utah’s legal code includes a clause that prohibits causing a catastrophe. While this seems logical, the law further specifies that intentionally or unintentionally creating a catastrophe, such as a nuclear explosion, is strictly prohibited. While it’s an extreme scenario, this law highlights the state’s intent to prevent catastrophic events.

3. No Mules on Highways

One unusual law in Utah prohibits driving mules on highways. While it’s uncommon to encounter someone riding a mule on modern highways, this law seems to have survived through time, perhaps originating from a time when mules were used more commonly for transportation.

4. Forbidden Acts During Marriages

Utah’s legal statutes have a few interesting regulations regarding marriages. It is illegal for a husband to swear during a marriage ceremony. Additionally, it’s against the law for a woman to marry her husband’s brother while the husband is still alive. These laws, although outdated, offer glimpses into historical marriage practices.

5. Birds Have the Right of Way on Highways

Another peculiar law in Utah dictates that birds have the right of way on highways. While it’s unlikely that birds understand traffic laws, this law probably serves as a reminder to drivers to be cautious and avoid harming wildlife on the road.

6. No Dunking Donuts

In Lehi, Utah, it’s prohibited to dunk a donut in your coffee on Sundays. This quirky law, although not actively enforced, is a nod to historical religious practices when certain activities were restricted on Sundays.

7. No Misleading Mice in Movie Theaters

It is illegal to mislead mice in movie theaters in Utah. While the exact context or reasoning behind this law remains unclear, it stands as one of the more enigmatic statutes in the state’s legal history.

8. Forbidden to Cause a “Serious Misdemeanor”

Utah law prohibits “causing a serious misdemeanor.” While the language might appear confusing, it reflects the state’s commitment to preventing actions that might lead to or incite illegal activities.

9. No Drinking in a Mine

In Utah, it is illegal to drink any alcoholic beverage while inside a mine. This law likely originated as a safety measure to prevent accidents due to impaired judgment or coordination while working underground.

10. Mandatory House Numbers

Finally, a more practical law mandates that every home in Utah must have a house number visible from the street. While not as quirky as others, it emphasizes the importance of clear identification for emergency services and postal workers.


Utah’s unusual laws, while often archaic or peculiar, add a touch of whimsy to the state’s legal framework. Some laws have historical significance, reflecting past customs or beliefs, while others might leave us scratching our heads. Despite their eccentricity, these laws offer intriguing insights into Utah’s legal history and the evolution of societal norms. While most of these statutes are rarely enforced or have faded into obscurity, they stand as curious remnants of a bygone era, adding a dash of quirkiness to Utah’s legal landscape.