Larvitar locations — where to catch

In Lumiose City (Legends: Z-A)

• Bleu Sector 7 — Walk, Static Encounter
• Jaune Sector 6 — Walk
• Magenta Sector 2 — Walk
• Rouge Sector 7 — Walk
• Vert Sector 2 — Walk
• Wild Zone 15 — Walk

In Paldea (Scarlet & Violet)

• Alfornada Cavern — Walk
• Dalizapa Passage — Walk
• East Province (Area Three) — Walk
• East Province (Area Two) — Walk
• Glaseado Mountain — Walk
• Inlet Grotto — Walk
• South Province (Area Five) — Walk
• South Province (Area Six) — Walk
• South Province (Area Three) — Walk
• Tagtree Thicket — Walk
• West Province (Area One) — Walk
• West Province (Area Two) — Walk

In Sinnoh (Diamond, Pearl & Platinum)

• Route 206 — Walk
• Route 207 — Walk

In Johto & Kanto (HeartGold & SoulSilver)

• Johto Safari Zone — Walk
• Mt. Silver — Walk
• Mt. Silver Cave — Walk

In Sevii Islands (FireRed & LeafGreen)

• Sevault Canyon — Walk

In Johto & Kanto (Gold, Silver & Crystal)

• Celadon City — Gift
• Mt. Silver — Walk
• Mt. Silver Cave — Walk

Other games (5)

• Brilliant Diamond / Shining Pearl (Gen 8): Route 207
• Sword / Shield (Gen 8): Giant's Seat, Lake of Outrage, Rolling Fields, Stony Wilderness
• Ultra Sun / Ultra Moon (Gen 7): Digletts Tunnel
• X / Y (Gen 6): Terminus Cave
• XD (Gen 3): Pyrite Town

Larvitar — full Pokédex entry