Machamp locations — where to catch

In Lumiose City (Legends: Z-A)

• Wild Zone 20 — Walk

In Hisui (Legends: Arceus)

• Arena's Approach — Walk

Other games (2)

• Sword / Shield (Gen 8): Dusty Bowl, Giant's Mirror, North Lake Miloch, Rolling Fields, South Lake Miloch, Stony Wilderness
• Yellow (Gen 1): Kanto

Machamp — full Pokédex entry