Brian Nelson Calley (born March 25, 1977) is an American politician who served as the 63rd lieutenant governor of Michigan, from 2011 to 2019.
A member of the Republican Party, Calley served as a member of the Michigan House of Representatives from 2007 to 2011.
Calley is known for his advocacy for people with autism and their families; his daughter is autistic.
Calley campaigned to require Michigan health insurance plans to include coverage for autism therapies, signing into law a package providing for such reforms as acting governor.