Cannabis in Wyoming

Cannabis in Wyoming is strictly illegal. Wyoming has some of the strictest cannabis laws in the United States. Cannabis itself is not allowed for medical purposes, but a 2015 law allows limited use of non-psychoactive CBD oil.
Possession of under of cannabis is a misdemeanor that can be punished with up to a year in jail and a $1000 fine; possession of over three ounces is a felony.
Prohibition.
Wyoming passed laws banning cannabis in the early 20th century, though sources differ as to the exact date: 1913 or 1929.
Medical use.
In July 2015, a law took effect allowing the use of CBD oil to treat seizures. The law is narrow and does not provide for in-state access.
Failed Attempts to Change Legality.
In 2015, the Wyoming chapter of the National Organization for the Reform of Marijuana Laws (NORML) gathered signatures to place legal medical marijuana on the 2016 election ballot as a ballot initiative. Wyoming has some of the most stringent ballot initiative requirements in the country, due to which the state has not seen a public initiative reach the ballot since 1991.
In 2016, legislation in the Wyoming House of Representatives to decriminalize possession of or less of marijuana (sponsored by State Representative James Byrd of Cheyenne) failed for the third year in a row.
In 2017, supporters sought 25,000 signatures to put the "Peggy A. Kelley Wyoming Cannabis Act of 2016" on the 2018 ballot as a public initiative, but failed to gather the required signatures by the February 14 deadline.
In 2021, a bill was filed by lawmakers that would legalize cannabis both for recreational and medical use. The bill however later died in the Wyoming House of Represenitives after it was missing a deadline.
Polling.
An October 2014 poll of Wyoming residents conducted by the University of Wyoming found that 35% supported legalizing the use of marijuana by adults, while 60% opposed such a measure. However, a large majority favored allowing adults to use marijuana if prescribed by a physician (72% support, 25% oppose). Compared to a previous survey in 2000, the 2014 results showed a modest increase in support for legalized personal marijuana use and no change in support of medical marijuana use. A 2016 study by the University of Wyoming showed that 81 percent of Wyoming residents supported legalizing prescribed medical cannabis.