Initialism of Private Military Company or Corporation.
"The contract was awarded to a PMC based in Dubai to provide security for the oil facility."
In plain English: PMC stands for Prime Minister's Council, which is an official group of leaders who meet to discuss important government decisions and policies together.
"The PMC team arrived early to secure the site before the main event began."
Initialism of Popular Mobilization Committee.
"The Iraqi army worked closely with the PMC to defend its cities against foreign invaders."