| Fraz urb luu | 23 | Fiend (demon) | Large | 18 | 337 | fly | chaotic evil | | Mordenkainen's Tome of Foes | | | | | | |
| Frog | 0 | Beast | Tiny | 11 | 1 | swim | unaligned | | Monster Manual (SRD) | 1 | 13 | 8 | 1 | 8 | 3 |
| Froghemoth | 10 | Monstrosity | Huge | 14 | 184 | swim | unaligned | | Volo's Guide to Monsters | 23 | 13 | 20 | 2 | 12 | 5 |
| Frost giant | 8 | Giant | Huge | 15 | 138 | | neutral evil | | Monster Manual (SRD) | 23 | 9 | 21 | 9 | 10 | 12 |
| Frost giant everlasting one | 12 | Giant (frost giant) | Huge | 15 | 189 | | chaotic evil | | Volo's Guide to Monsters | | | | | | |
| Frost salamander | 9 | Elemental | Huge | 17 | 168 | | unaligned | | Mordenkainen's Tome of Foes | | | | | | |
| Galeb duhr | 6 | Elemental | Medium | 16 | 85 | | neutral | | Monster Manual (BR) | 20 | 14 | 20 | 11 | 12 | 11 |
| Gargoyle | 2 | Elemental | Medium | 15 | 52 | fly | chaotic evil | | Monster Manual (SRD) | 15 | 11 | 16 | 6 | 11 | 7 |
| Gas spore | 0.5 | Plant | Large | 5 | 1 | fly | unaligned | | Monster Manual | | | | | | |
| Gauth | 6 | Aberration | Medium | 15 | 67 | fly | lawful evil | | Volo's Guide to Monsters | 10 | 14 | 16 | 15 | 15 | 13 |
| Gazer | 0.5 | Aberration | Tiny | 13 | 13 | fly | neutral evil | | Volo's Guide to Monsters | | | | | | |
| Gelatinous cube | 2 | Ooze | Large | 6 | 84 | | unaligned | | Monster Manual (SRD) | 14 | 3 | 20 | 1 | 6 | 1 |
| Geryon | 22 | Fiend (devil) | Huge | 19 | 300 | fly | lawful evil | | Mordenkainen's Tome of Foes | | | | | | |
| Ghast | 2 | Undead | Medium | 13 | 36 | | chaotic evil | | Monster Manual (SRD) | 16 | 17 | 10 | 11 | 10 | 8 |
| Ghost | 4 | Undead | Medium | 11 | 45 | fly | any alignment | | Monster Manual (SRD) | 7 | 13 | 10 | 10 | 12 | 17 |
| Ghoul | 1 | Undead | Medium | 12 | 22 | | chaotic evil | | Monster Manual (SRD) | 13 | 15 | 10 | 7 | 10 | 6 |
| Giant ape | 7 | Beast | Huge | 12 | 157 | | unaligned | | Monster Manual (SRD) | 23 | 14 | 18 | 7 | 12 | 7 |
| Giant badger | 0.25 | Beast | Medium | 10 | 13 | | unaligned | | Monster Manual (SRD) | 13 | 10 | 15 | 2 | 12 | 5 |
| Giant bat | 0.25 | Beast | Large | 13 | 22 | fly | unaligned | | Monster Manual (SRD) | 15 | 16 | 11 | 2 | 12 | 6 |
| Giant boar | 2 | Beast | Large | 12 | 42 | | unaligned | | Monster Manual (SRD) | 17 | 10 | 16 | 2 | 7 | 5 |
| Giant centipede | 0.25 | Beast | Small | 13 | 4 | | unaligned | | Monster Manual (SRD) | 5 | 14 | 12 | 1 | 7 | 3 |
| Giant constrictor snake | 2 | Beast | Huge | 12 | 60 | swim | unaligned | | Monster Manual (SRD) | 19 | 14 | 12 | 1 | 10 | 3 |
| Giant crab | 0.12 | Beast | Medium | 15 | 13 | swim | unaligned | | Monster Manual (SRD) | 13 | 15 | 11 | 1 | 9 | 3 |
| Giant crocodile | 5 | Beast | Huge | 14 | 85 | swim | unaligned | | Monster Manual (SRD) | 21 | 9 | 17 | 2 | 10 | 7 |
| Giant eagle | 1 | Beast | Large | 13 | 26 | fly | neutral good | | Monster Manual (SRD) | 16 | 17 | 13 | 8 | 14 | 10 |