Joshua David Hawley is an American politician and lawyer serving as the senior United States senator from Missouri, a seat he has held since 2019. A member of the Republican Party, Hawley served as the 42nd attorney general of Missouri from 2017 to 2019, before defeating two-term incumbent Democratic senator Claire McCaskill in the 2018 election.

The Office of the Missouri Attorney General was created in 1806 when Missouri was part of the Louisiana Territory. Missouri's first Constitution in 1820 provided for an appointed attorney general, but since the 1865 Constitution, the Attorney General has been elected. As of January 2023, there have been 44 attorneys general in Missouri.