Where to Find Swinub

Generation 1

Red
Blue
Yellow

Generation 2

Gold

Ice Path

Silver

Ice Path

Crystal

Ice Path (Morning & Day)

Generation 3

Ruby
Sapphire
Emerald
Fire Red

Icefall Cave

Leaf Green

Icefall Cave

Generation 4

Diamond

Route 217 (Swarm)

Pearl

Route 217 (Swarm)

Platinum

Route 217, Acuity Lakefront

Heart Gold

Ice Path

Soul Silver

Ice Path

Generation 5

Black

Breed Piloswine or Mamoswine

White

Breed Piloswine or Mamoswine

Black 2

Breed Piloswine or Mamoswine

White 2

Breed Piloswine or Mamoswine

Generation 6

X

Breed Piloswine or Mamoswine

Y

Breed Piloswine or Mamoswine

Omega Ruby
Alpha Sapphire

Generation 7

Sun

Tapu Village (Island Scan: Monday)

Moon

Tapu Village (Island Scan: Monday)

Ultra Sun

Tapu Village (Island Scan: Monday)

Ultra Moon

Tapu Village (Island Scan: Monday)

Let's Go Pikachu
Let's Go Eevee

Generation 8

Sword

Rolling Fields, Giant’s Seat, Giant’s Mirror, Hammerlocke Hills

Dusty Bowl, Stony Wilderness (Max Raid Battle)

Expansion Pass DLC:

Slippery Slope

Shield

Rolling Fields, Giant’s Seat, Giant’s Mirror, Hammerlocke Hills, Dusty Bowl

Dusty Bowl, Stony Wilderness (Max Raid Battle)

Expansion Pass DLC:

Slippery Slope

Brilliant Diamond

Route 217 (Swarm)

Grand Underground – Icy Cave, Swampy Cave, Whiteout Cave, Glacial Cavern, Bogsunk Cavern

Shining Pearl

Route 217 (Swarm)

Grand Underground – Icy Cave, Swampy Cave, Whiteout Cave, Glacial Cavern, Bogsunk Cavern

Legends Arceus

Crimson Mirelands: massive mass outbreaks

Alabaster Icelands: Avalanche Slopes, Bonechill Wastes (additional  nearby), near Arena’s Approach, Avalugg’s Legacy, massive mass outbreaks

Generation 9

Scarlet

The Hidden Treasures of Area Zero DLC:

Reveler’s Road, Kitakami Hall, Mossfell Confluence, Oni Mountain, Oni’s Maw, Chilling Waterhead

Tera Raid Battles (2★)

Violet

The Hidden Treasures of Area Zero DLC:

Reveler’s Road, Kitakami Hall, Mossfell Confluence, Oni Mountain, Oni’s Maw, Chilling Waterhead

Tera Raid Battles (2★)

Swinub Evolution Tree