Yes. Fighter aircraft have air conditioning systems. In general, they are called as Environmental Conditioning Systems (ECS).

How do fighter jet pilots pee or poop?

Piddle Packs are small bags male fighter pilots use to pee while in flight. Piddle-packs are the ultimate long road trip solution. They are specially shaped bags with absorbent beads in them.

Is there AC in planes?

Air Conditioning System in modern aircraft

The air conditioning system is supplied by air processed through two packs that regulate airflow and temperature as required. Airplane air conditioning system mix hot and cold air to achieve the desired temperature.