The following tables contain every hidden item in Gold, Silver, and Crystal and its location.
| Item | Area | Location | Notes |
|---|---|---|---|
| Potion | Route 30 | Four tiles south and three west of the entrance to Mr. Pokémon's house | |
| Elixer | Dark Cave (Route 31/46 side) | In a dead-end in the northwestern part of the eastern area of the cave | Requires Rock Smash. |
| Hyper Potion | Violet City | At the end of the path between the Pokémon Center and Earl's Pokémon Academy | Requires Cut. |
| Super Potion | Route 32 | On the northeastern tile of the grass patch north of the pier | |
| Great Ball | Route 32 | At the end of the path north of the Pokémon Center | It cannot be obtained on Fridays. |
| Full Heal | Azalea Town | On the middle tile of the northern wall of Slowpoke Well | |
| Full Heal | Ilex Forest | At the end of the dead end south of the pond | Only in Gold and Silver. |
| Full Heal | Ilex Forest | Two tiles west of the sign near the pond | Only in Crystal. |
| Super Potion | Ilex Forest | In the indent north of the man who gives the player TM02 Headbutt | Only in Gold and Silver. |
| Super Potion | Ilex Forest | In the corner next to the large trees, east of the two large trees east of the man who gives the player TM02 Headbutt | Only in Crystal. |
| Ether | Ilex Forest | At the end of the dead end in the northeast corner | Only in Gold and Silver. |
| Ether | Ilex Forest | In the corner next to the trees immediately east of the northeastern corner of the northernmost pond | Only in Crystal. |
| Super Potion | Route 34 | In the outdoor area of the Pokémon Day Care, on the ground tile in the corner where the water bends | |
| Rare Candy | Route 34 | In the area west of Picnicker Gina, in the northwestern corner of the second tree from the east | Requires Surf. |
| Parlyz Heal | Goldenrod Tunnel B1F | On the tile between the northernmost shop counters | |
| Super Potion | Goldenrod Tunnel B1F | Two tiles north and one west of the northernmost stool next to the southernmost shop counter | |
| Antidote | Goldenrod Tunnel B1F | Two tiles south and one west of the door to the Goldenrod Department Store basement | |
| Revive | Goldenrod Tunnel B2F | Three tiles west of Burglar Eddie | |
| Max Potion | Goldenrod Tunnel B2F | Three tiles north and one west of Burglar Duncan | |
| Full Heal | National Park | Behind the fence, at the end of the path near the southern gate | |
| Ether | Route 37 | One tile north and one west of the Route 37 sign | |
| Hyper Potion | Ecruteak City | In the corner by the pond in the northeast | |
| Ultra Ball | Burned Tower 1F | In the dead end east of the entrance, north of Morty | Only in Crystal. |
| Ether | Burned Tower 1F | In the notch in the dead end at the center of the room, southeast of the X Speed | Requires Rock Smash. Only in Gold and Silver. |
| Ether | Burned Tower 1F | In the notch in the dead end at the center of the room | Only in Crystal. |
| Burn Heal | Burned Tower B1F | In the area accessible from the eastern hold, on the floor tile between the two rocks next to the eastern wall | Only in Gold and Silver. |
| Ultra Ball | Burned Tower B1F | In the area accessible from the western hole, on the floor tile between the two rocks next to the western wall | Only in Gold and Silver. |
| Nugget | Burned Tower B1F | Two tiles north and one west of the stairs leading to the Legendary Beasts' plateau | Only in Gold and Silver. |
| Max Potion | Tin Tower 4F | On the northeastern tile of the platform surrounding the central pillar | |
| Full Restore | Tin Tower 5F | In the southeastern area, one tile north and one west of the stairs to 4F | |
| Carbos | Tin Tower 5F | In the southwestern area, one tile south and one east of the stairs to 4F | |
| Nugget | Route 39 | Two tiles east and one south of the northwesternmost Miltank in Moomoo Farm's pasture | |
| Protein | Olivine City | In the harbor, on the buoy west fot he southwesternmost water tile that can be Surfed on | Requires the S.S. Ticket. |
| Hyper Potion | Olivine Lighthouse 5F | One tile east of TM34 | |
| Hyper Potion | Route 40 | Under the westernmost breakable rock | Requires Rock Smash. Only in Gold and Silver. |
| Hyper Potion | Route 40 | Under the northernmost breakable rock | Requires Rock Smash. Only in Crystal. |
| Ultra Ball | Whirl Islands B1F | In the dead-end northeast of the southeastern ladder | |
| Rare Candy | Whirl Islands B1F | On the floor tile in the dead-end west of the northeastern ladder | |
| Full Restore | Whirl Islands B1F | In the rock south of the Carbos | |
| Max Ether | Route 41 | On the southeasternmost ground tile of the square of four tiles northwest of the southwesternmost entrance to the Whirl Islands | Requires Whirlpool. |
| Revive | Cianwood City | Under the northeastern breakable rock of the two rocks diagonal from each other in the northern part of the city | Requires Rock Smash. Only in Gold and Silver. |
| Revive | Cianwood City | Under the breakable rock south of the Poké Seer's house | Requires Rock Smash. Only in Crystal. |
| Max Ether | Cianwood City | Under the breakable rock northwest of the Photo Studio | Requires Rock Smash. |
| Max Potion | Route 42 | On the southwestern tile of the large rock in the western pond | Requires Surf. |
| Hyper Potion | Mt. Mortar 1F (front) | On the east side, on a rock west of the entrance to 1F (back) | |
| Max Repel | Mt. Mortar 1F (back) | In the northern area, on a rock south of the stairs from the large raised platform | Requires Surf and Waterfall. |
| Full Restore | Mt. Mortar 2F | On the eastern tile between the ledges east of the Dragon Scale | Only in Gold and Silver. |
| Full Restore | Mt. Mortar 2F | In the northern area, on the rock at the end of the dead end east of the Dragon Scale | Only in Crystal. |
| Max Revive | Mt. Mortar B1F | On a lone rock south of the ladder from 2F | Requires Surf and Waterfall. |
| Full Restore | Lake of Rage | In the dead-end southwest of the lake, accessible from the western part of Route 43 | |
| Rare Candy | Lake of Rage | At the end of the western path west of the lake | Requires Cut. It cannot be obtained on Wednesdays. |
| Max Potion | Lake of Rage | One tile bnorth of the northeasternmost tile of the lake | |
| Revive | Team Rocket HQ B1F | Three tiles north of the stairs | |
| Full Heal | Team Rocket HQ B2F | On the machine east of the desk with a computer in the eastern area | |
| Elixer | Route 44 | Three tiles west of the southeasternmost grass tile in the grass patch in the lake | Requires Surf. |
| Max Potion | Ice Path B1F | In the middle rock in the ice puzzle in the south part of the floor | |
| Carbos | Ice Path B2F | On the floor tile in the dead-end in the area southwest of the ice puzzle in the north part of the floor | |
| Ice Heal | Ice Path B2F | On the rock in the middle of the ice puzzle in the south part of the floor | |
| Revive | Dragon's Den | East of the entrance, on the northeasternmost ground tile | Only in Gold and Silver. |
| Revive | Dragon's Den | On the southeasternmost ground tile of the spit of land east of the Dragon Shrine | Requires Whirlpool. Only in Crystal. |
| Max Elixer | Dragon's Den | On the southeastern tile of the four-tile boulder north of the water next to the Dragon Fang | Requires Whirlpool. |
| Max Potion | Dragon's Den | On the southeast tile of the boulder north of the island with the Dragon Shrine | |
| PP Up | Route 45 | One tile east and one south of the southwesternmost tile of the pond to the south | Requires Surf. |
| Full Heal | Victory Road 1F | On the lone rock west of the entrance | |
| Max Potion | Victory Road 2F | On the rock south of TM26 | |
| Full Restore | Route 2 | In the maze, on the northwestern tree of the group of four trees north of the southern entrance | |
| Revive | Route 2 | In the maze, on the tree south of the dead-end in the southeast | |
| Max Ether | Route 2 | In the maze, on the tree east of the dead-end southwest of the Berry tree | |
| Full Heal | Route 2 | In the maze, on the ground tile of the dead-end northeast of the Max Potion | |
| Moon Stone | Mt. Moon Square | Under a rock west of the shop | Requires Rock Smash. Only on Monday nights, after interrupting the Clefairy dance. |
| Ultra Ball | Route 4 | Two tiles north and one west of the stairs between the ledges on the plateau northeast of Picnicker Hope | |
| Berserk Gene | Cerulean City | Outside Cerulean Cave, on the water tile in the corner between two walls west of the man in the backyard in Cerulean City | Requires using Surf on Route 24. |
| Machine Part | Cerulean Gym | On the northwestern tile of the water in the middle of the walkways | Only after visiting the Power Plant. |
| Potion | Route 25 | In the lone tree to the west | |
| Full Restore | Route 5-6 Underground Path | Seven tiles south of the northern exit | |
| X Special | Route 5-6 Underground Path | Two tiles west and five north of the southern exit | |
| Full Heal | Vermilion City | In the bush next to the Gym | |
| Iron | Vermilion Harbor | On the westernmost buoy of the three in a horizontal line in the water east of the pier | Requires Surf. Only accessible after taking the S.S. Aqua from Olivine City. |
| Revive | Route 11 | On the tree south of the Berry tree | |
| Max Revive | Diglett's Cave | On the lone rock near the northern exit | |
| Ether | Route 9 | On the westernmost tree of the four trees south of Camper Sid | Only in Gold and Silver. |
| Ether | Route 9 | In the southeastern corner east of Hiker Sidney | Only in Crystal. |
| X Accuracy | Rock Tunnel 1F | On the ground tile in the dead end east of the northern exit | |
| X Defend | Rock Tunnel 1F | On the ground tile in the dead end east of TM47 | |
| PP Up | Celadon City | In the southeastern area, on the tree north of the dead end east of the Game Corner | |
| Leftovers | Celadon City | In the restaurant's trash can | |
| Elixer | Route 12 | On the southwest tile of the island southeast of the northern gate | Requires Surf. |
| Calcium | Route 13 | On the fence immediately east of the Trainer Tips sign | |
| Max Ether | Route 17 | One tile west and two north of the southeasternmost tile of the northeastern patch of grass | Only in Gold and Silver. |
| Max Ether | Route 17 | One tile south of the southeast corner of the small corridor connecting the western and middle paths near the south end of the route | Only in Crystal. |
| Max Elixer | Route 17 | On the western tile of the small fence at the southern end | |
| Rare Candy | Cinnabar Island | On the ground tile in the dead end on the northern part of the island | |
| Rare Candy | Route 28 | On the floor tile in the dead end to the northeast | Requires using Cut at Mt. Silver. Only in Gold and Silver. |
| Rare Candy | Route 28 | On the tree north of the dead end to the northeast | Requires using Cut at Mt. Silver. Only in Crystal. |
| Full Restore | Mt. Silver Outside | In the middle of the plateau to the southwest | Requires Surf. |
| Dire Hit | Mt. Silver 1F | On a rock between the ledges northeast of the entrance | |
| Ultra Ball | Mt. Silver 1F | On the floor tile of the dead end southeat of the entrance to 2F | |
| Max Potion | Mt. Silver 2F | On the rock west of the entrance to 2F |