The following table contains the location(s) of all Poké Ball types in Red, Green, Blue, and Yellow.
Poké Balls can only be purchased at the Viridian Poké Mart after delivering the Parcel to Professor Oak in Pallet Town.
| City | Poké Balls sold here |
|---|---|
| Viridian City | Poké Ball |
| Pewter City | Poké Ball |
| Cerulean City | Poké Ball |
| Vermilion City | Poké Ball |
| Lavender Town | Great Ball |
| Celadon City | Great Ball |
| Fuchsia City | Great Ball, Ultra Ball |
| Saffron City | Great Ball |
| Cinnabar Island | Great Ball, Ultra Ball |
| Indigo Plateau | Great Ball, Ultra Ball |
| Item | Area | Location | Notes |
|---|---|---|---|
| Poké Ball (5x) | Pallet Town | Obtained from Professor Oak in his Lab | Only if the player defeats the Rival on Route 22 without catching Pokémon or buying Poké Balls. |
| Great Ball | Route 4 | On the eastern half, two tiles north and one west of the tile between the two ledges surrounding the empty plateau east of the Mt. Moon exit | Hidden. |
| Ultra Ball | Route 23 | On the eastern tree of the two trees just north of the water, by the eastern grass patch | Hidden. Requires Surf. |
| Great Ball | Viridian Forest | Northwest of the entrance | |
| Great Ball | S.S. Anne Kitchen | In the kitchen, in the southeasternmost trash can | Hidden. |
| Safari Ball (30x) | Safari Zone Center | Obtained when starting the Safari Game | Cannot be kept permanently, but can be used to catch Pokémon in the Safari Zone. |
| Master Ball | Silph Co. 11F | Obtained from Silph Co's President | Only after defeating Giovanni. |
| Ultra Ball | Seafoam Islands B4F | On the easternmost rock in the southeast | Hidden. |
| Ultra Ball | Victory Road 2F | On a rock east of the Pokémaniac near Moltres | Hidden. |
| Item | Games | Location | Notes | |||
|---|---|---|---|---|---|---|
| Ultra Ball | R | G | B | Y | On 1F, northeast of the center | |
| Ultra Ball | R | G | B | Y | On 2F, in the southeastern area | |
| Ultra Ball | R | G | B | Y | On 2F, in the southwestern area | |
| Ultra Ball | R | G | B | Y | On 2F, near the center | |
| Ultra Ball | R | G | B | Y | On B1F, in the eastern area on the plateau | |
| Ultra Ball | R | G | B | Y | On B1F, on a rock near the Max Revive | Hidden. In Japanese Red and Green only, picking up this item causes five others to disappear. Picking up any of those five will cause this one to disappear. All six are refreshed if a Fossil is given to revive in the Cinnabar Lab. |
| Ultra Ball | R | G | B | Y | On B1F, in the central area | |
| Ultra Ball | R | G | B | Y | On B1F, on the discolored rock in the northeastern area | Hidden. |
| Ultra Ball | R | G | B | Y | On B1F, on the southwestern plateau | |
| Ultra Ball | R | G | B | Y | On B1F, in the northeastern area | |