Sean McAllister

“Sean McAllister has returned to practicing under the name McAllister Law Office, P.C. To contact Sean, see

Sean T. McAllister is one of Colorado’s leading drug policy reform lawyers. His practice focuses on civil rights, medical marijuana issues, criminal defense, DUI, and family law. He is the lead partner in a 4 lawyer law firm based in Denver, Colorado.

Sean has litigated several groundbreaking medical marijuana cases in Colorado. He co-authored a ballot initiative in Breckenridge, Colorado that removed local penalties for the possession of small amounts of marijuana. He litigated a ban on medical marijuana dispensaries in Eagle, Colorado and authored a ballot initiative that ultimately led to the ban being overturned by a vote of the people. He has sued several cities and counties related to their implementation of the medical marijuana law. He also assisted in the drafting of the 2012 marijuana legalization initiative (I-30) that was recently certified for the ballot.

Sean is a member and former Board Member of the Colorado Criminal Defense Bar and he is regularly appointed by Courts to represent indigent defendants in felony cases. He is founder and the Chair of the Board of Directors of Sensible Colorado, a drug policy reform organization and a lifetime member of the NORML Legal Committee. From 2009-2011, Sean served on the states Drug Policy Task Force, a committee of the Colorado Commission on Criminal and Juvenile Justice. He was appointed co-chair of the DUID-Marijuana Sub-Committee that conducted an extensive review of drugged driving laws in 2011. Sean is also on the Speakers Bureau for Law Enforcement Against Prohibition. From 2000 to 2003, Sean served as an Assistant Attorney General with the State of Colorado. Sean is a graduate of the University of Colorado School of Law, class of 1999.

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