Alistair Bruce Coe is an Australian politician and a former leader of the Liberal Party and Leader of the Opposition in the Australian Capital Territory (ACT). He was a member of the ACT Legislative Assembly from 2008 to 2021, representing the Ginninderra electorate from 2008 to 2016 and the Yerrabi electorate from 2016 to 2021. As Opposition Leader Coe led the Liberal Party to defeat at the 2020 election. He chose not to re-contest the party's leadership position, and resigned from the Assembly in 2021.

The Leader of the Opposition of the Australian Capital Territory, is an official role usually occupied by the leader of the second largest party or coalition in the Australian Capital Territory Legislative Assembly. The title is conferred under Standing Order 5A of the ACT Legislative Assembly, that the Leader of the Opposition shall be the leader of the largest non-Government party, with the consent of that member. In the event of an equal number of members of the second largest party, the Assembly shall vote and elect a Leader of the Opposition.