Ordnance in Apex Legends refers to the "throwables" in the game, which include Frag Grenades, Thermite Grenades, and Arc Stars. Ordnances are explosives and projectiles that can be thrown to deal damage to enemies in a specific area. They can be found in Supply Bins, Loot Ticks, or scattered randomly throughout various maps. Ordnances can be used defensively to deter enemies when under pressure, mid-encounter to regroup and replenish supplies, and turn the tide of the fight). There are different types of ordnances available in Apex Legends, each with their own detonation times and damage ticks.

In addition to the throwables, there are also "exclusive ordnances" that are limited to legend abilities. Currently, there are four legends with ordnances built into their kit, including Gibraltars ultimate, Caustics ultimate, Bangalores tactical and ultimate, and Fuses tactical and ultimate. These ordnances are available on a cooldown, unlike the throwables which can be picked up from ground loot.

To complete certain challenges, players may need to deal a certain amount of damage with ordnances. It is important to note that ordnance refers to all types of explosives and projectiles, including throwables, tacticals, and ultimates.