The 2018 Connecticut Attorney General election took place on November 6, 2018, to elect the attorney general of Connecticut.
Incumbent Connecticut Attorney General George Jepsen did not seek re-election. Democratic nominee and state representative William Tong defeated Republican nominee Susan Hatfield.
On August 14, 2018, State representative William Tong won the Democratic primary, defeating US attorney Chris Mattei and state senator Paul Doyle.
On August 14, 2018, assistant state's attorney Susan Hatfield won the Republican primary, defeating former state representative John Shaban.
William Tong won the general election on November 6, 2018, with a 6.01% margin of victory.
Tong won three of the five congressional districts, while Hatfield won the other two, both of which elected Democrats.