Dialga locations — where to catch

In Hisui (Legends: Arceus)

• Temple of Sinnoh — Static Encounter

In Sinnoh (Diamond, Pearl & Platinum)

• Spear Pillar — Static Encounter

In Johto & Kanto (HeartGold & SoulSilver)

• Sinjoh Ruins — Static Encounter, Event

Other games (3)

• Brilliant Diamond / Shining Pearl (Gen 8): Spear Pillar
• Ultra Sun / Ultra Moon (Gen 7): Ultra Space Wilds, Ultra Space
• Omega Ruby / Alpha Sapphire (Gen 6): Soaring In The Sky

Dialga — full Pokédex entry