© Getty Images

Cynthia Nixon -

'Sex and the City' star Cynthia Nixon swapped acting for politics when she ran for Governor of New York in 2010. 

©

Getty Images 

Cynthia Nixon -

One of her main campaign policies was the legalization of recreational marijuana use, but her reasons were serious. 

© Getty Images

Cynthia Nixon -

A disproportionate number of Black and Latinx people are incarcerated in the US for drug-related offences. They made up 80% of arrests for marijuana in New York, despite the fact that marijuana use is roughly equal across all white and minority communities. 

©

Getty Images 

Bill Maher -

Bill Maher has been an outspoken advocate for reform of marijuana laws for many years, and he's not afraid to tell it like it is! He is considered one of the key figures in the legalization debate. 

© Getty Images

Bill Maher -

In 2016, he actually smoked a joint live on his hit HBO talk show 'Real Time with Bill Maher.'

©

Getty Images 

Bill Maher -

He sits on the board of NORML, the National Organization for the Reform of Marijuana Laws. He is pictured here being honored at the Marijuana Policy Project Celebrity Fundraiser.

©

Getty Images 

Melissa Etheridge -

Oscar- and Grammy- winning singer Melissa Etheridge has been a supporter of marijuana rights for decades, but her battle with breast cancer reinforced her dedication. 

© Getty Images

Melissa Etheridge -

She used cannabis to counteract the terrible side effects her chemotherapy and has become a passionate advocate for the widespread legalization of medical marijuana since then. 

©

Getty Images 

Melissa Etheridge -

She has developed a 47-acre cannabis plot called Etheridge Farm where she is creating strains for products such as edibles and oils. 

©

Getty Images 

Woody Harrelson - Actor Woody Harrelson is a well-known marijuana activist. He started back in 1996 with a symbolic protest when a bill was defeated to make Colorado the first state to legalize industrial hemp growth since WWII.

© Getty Images

Woody Harrelson -

He also served on the advisory board to National Organization for the Reform of Marijuana Laws for 15 years.

©

Getty Images 

Seth Rogen -

Seth Rogen is a famous stoner, on-screen and off. However, he's much more than an enthusiast! 

© Getty Images

Seth Rogen -

He also owns a cannabis company called Houseplant, and is making efforts to raise awareness of positive reforms in the US criminal justice system that could allow marijuana charges to be removed from criminal records. 

© Getty Images

Whoopi Goldberg - Whoopi Goldberg has been vocal about her support of marijuana use for decades. She even started a marijuana company just for women. The line of products are aimed at reducing menstrual cramps.

© Getty Images

Snoop Dogg -

Snoop Dogg is one of the pop culture figures most associated with marijuana. He has unapologetically tried to normalize its recreational use throughout his career. 

© Getty Images 

Snoop Dogg -

Apart from his songs and TV appearances, he has also made massive investments into the cannabis industry. 

©

Getty Images 

Snoop Dogg -

He founded the venture capital firm Casa Verde, which focuses on investing in cannabis related businesses. They have already supported 21 start-ups. 

©

Getty Images 

Martha Stewart -

Snoop Dogg's good friend Martha Stewart is also a supporter! She was the keynote speaker at the second annual World Cannabis Congress and is starting her own line of CBD products. 

© Getty Images

Ricky Williams - Ricky Williams went from being a pro football player in the NFL to a cannabis advocate and healer.

© Getty Images

Ricky Williams -

He found the healing effects of cannabis when he suffered from anxiety and depression, and began to learn about alternative medicines and philosophies. 

©

Getty Images 

Ricky Williams -

He now regularly speaks at cannabis conferences and has started his own business, Real Wellness. It's a brand that combines alternative medicines to create medicinal marijuana products. 

©

Getty Images 

Al Harrington - Al Harrington is another sports star turned cannabis advocate. After leaving the NBA he started his own cultivating company, Viola Extracts, and also mentors and invests in other budding entrepreneurs.

© Getty Images

Richard Branson -

As one of the world's most successful businessmen, Richard Branson has been speaking out to advise the world to invest in marijuana! He made this clear in his keynote address at the cannabis/tech conference New West Summit.

© Getty Images 

Jesse Ventura -

Some know Jesse Ventura from his career as a wrestler on WWE, while others may recognize him as the Governor of Minnesota! In the cannabis world, he's known as one of the biggest supporters of legalization in the community. 

©

Getty Images 

Jesse Ventura -

In 2016 he released a book called 'Jesse Ventura's Marijuana Manifesto: How Lies, Corruption, and Propaganda Kept Cannabis Illegal.'

©

Getty Images 

Jesse Ventura -

He argues that the war on drugs has done a great deal of harm to the United States, and emphasizes that the states that have legalized marijuana have seen drops in opioid and heroin usage. 

©

Getty Images 

Peter Thiel - Peter Thiel, one of the founders of PayPal, invested US$70,000 in support of the Proposition 9 campaign to make marijuana legal in California back in 2010.

© Getty Images

Morgan Freeman -

Morgan Freeman began using marijuana medicinally after a car accident left him with chronic pain. He publicly states that marijuana should be legalized across the board. 

©

BrunoPress

What next? -

Now you know which celebs are the biggest weed advocates, check out which ones are psychedelic enthusiasts!

© Getty Images