This is a listing of all the Pokemon that were introduced in the Hoenn region.

Treecko: A grass Pokemon that evolves into Grovyle; this is a "starter Pokemon" for the Hoenn region
Grovyle: A grass Pokemon that evolves from Treecko and can evolve into Sceptile
Sceptile: A grass Pokemon that evolves from Grovyle
Torchic: A fire Pokemon that evolves into Combusken; this is a "starter Pokemon" for the Hoenn region
Combusken: A fire / fighting Pokemon that evolves from Torchic and can evolve into Blaziken
Blaziken: A fire / fighting Pokemon that evolves from Combusken
Mudkip: A water Pokemon that evolves into Marshtomp; this is a "starter Pokemon" for the Hoenn region
Marshtomp: A water / ground Pokemon that evolves from Mudkip and can evolve into Swampert
Swampert: A water / ground Pokemon that evolves from Marshtomp
Poochyena: A dark Pokemon that evolves into Mightyena
Mightyena: A dark Pokemon that evolves from Poochyena
Zigzagoon: A normal Pokemon that evolves into Linoone
Linoone: A normal Pokemon that evolves from Zigzagoon
Wurmple: A bug Pokemon that evolves into Silcoon or Cascoon
Silcoon: A bug Pokemon that evolves from Wurmple and can evolve into Beautifly
Beautifly: A bug / flying Pokemon that evolves from Silcoon
Cascoon: A bug Pokemon that evolves from Wurmple and can evolve into Dustox
Dustox: A bug / poison Pokemon that evolves from Cascoon
Lotad: A water / grass Pokemon that evolves into Lombre
Lombre: A water / grass Pokemon that evolves from Lotad and can evolve into Ludicolo
Ludicolo: A water / grass Pokemon that evolves from Lombre
Seedot: A grass Pokemon that evolves into Nuzleaf
Nuzleaf: A grass / dark Pokemon that evolves from Seedot and can evolve into Shiftry
Shiftry: A grass / dark Pokemon that evolves from Nuzleaf
Taillow: A normal / flying Pokemon that evolves into Swellow
Swellow: A normal / flying Pokemon that evolves from Taillow
Wingull: A water / flying Pokemon that evolves into Pelipper
Pelipper: A water / flying Pokemon that evolves from Wingull
Ralts: A psychic Pokemon that evolves into Kirlia
Kirlia: A psychic Pokemon that evolves from Ralts and can evolve into Gardevoir or Gallade
Gardevoir: A psychic Pokemon that evolves from Kirlia
Surskit: A bug / water Pokemon that evolves into Masquerain
Masquerain: A bug / flying Pokemon that evolves from Surskit
Shroomish: A grass Pokemon that evolves into Breloom
Breloom: A grass / fighting Pokemon that evolves from Shroomish
Slakoth: A normal Pokemon that evolves into Vigoroth
Vigoroth: A normal Pokemon that evolves from Slakoth and can evolve into Slaking
Slaking: A normal Pokemon that evolves from Vigoroth
Nincada: A bug / ground Pokemon that evolves into Ninjask or Shedinja
Ninjask: A bug / flying Pokemon that evolves from Nincada
Shedinja: A bug / ghost Pokemon that evolves from Nincada
Whismur: A normal Pokemon that evolves into Loudred
Loudred: A normal Pokemon that evolves from Whismur and can evolve into Exploud
Exploud: A normal Pokemon that evolves from Loudred
Makuhita: A fighting Pokemon that evolves into Hariyama
Hariyama: A fighting Pokemon that evolves from Makuhita
Azurill: A normal Pokemon that evolves into Marill
Nosepass: A rock Pokemon that evolves into Probopass
Skitty: A normal Pokemon that evolves into Delcatty
Delcatty: A normal Pokemon that evolves from Skitty
Sableye: A dark / ghost Pokemon that does not evolve
Mawile: A steel Pokemon that does not evolve
Aron: A steel / rock Pokemon that evolves into Lairon
Lairon: A steel / rock Pokemon that evolves from Aron and can evolve into Aggron
Aggron: A steel / rock Pokemon that evolves from Lairon
Meditite: A fighting / psychic Pokemon that evolves into Medicham
Medicham: A fighting / psychic Pokemon that evolves from Meditite
Electrike: An electric Pokemon that evolves into Manectric
Manectric: An electric Pokemon that evolves from Electrike
Plusle: An electric Pokemon that does not evolve
Minun: An electric Pokemon that does not evolve
Volbeat: A bug Pokemon that does not evolve
Illumise: A bug Pokemon that does not evolve
Rosealia: A grass / poison Pokemon that evolves from Budew and can evolve into Roserade
Gulpin: A poison Pokemon that evolves into Swalot
Swalot: A poison Pokemon that evolves from Gulpin
Carvanha: A dark / water Pokemon that evolves into Sharpedo
Sharpedo: A dark / water Pokemon that evolves from Carvanha
Wailmer: A water Pokemon that evolves into Wailord
Wailord: A water Pokemon that evolves from Wailmer
Numel: A fire / ground Pokemon that evolves into Camerupt
Camerupt: A fire / ground Pokemon that evolves from Numel
Torkoal: A fire Pokemon that does not evolve
Spoink: A psychic Pokemon that evolves into Grumpig
Grumpig: A psychic Pokemon that evolves from Spoink
Spinda: A normal Pokemon that does not evolve
Trapinch: A ground Pokemon that evolves into Vibrava
Vibrava: A dragon / ground Pokemon that evolves from Trapinch and can evolve into Flygon
Flygon: A dragon / ground Pokemon that evolves from Vibrava
Cacnea: A grass Pokemon that evolves into Cacturne
Cacturne: A dark / grass Pokemon that evolves from Cacnea
Swablu: A flying / normal Pokemon that evolves into Altaria
Altaria: A dragon / flying Pokemon that evolves from Swablu
Zangoose: A normal Pokemon that does not evolve
Seviper: A poison Pokemon that does not evolve
Lunatone: A psychic / rock Pokemon that does not evolve
Solrock: A psychic / rock Pokemon that does not evolve
Barboach: A ground / water Pokemon that evolves into Whiscash
Whiscash: A ground / water Pokemon that evolves from Barboach
Corphish: A water Pokemon that evolves into Crawdaunt
Crawdaunt: A water / dark Pokemon that evolves from Corphish
Baltoy: A ground / psychic Pokemon that evolves into Claydol
Claydol: A ground / psychic Pokemon that evolves from Baltoy
Lileep: A rock / grass Pokemon that evolves from a Root Fossil and can evolve into Cradily
Cradily: A rock / grass Pokemon that evolves from Lileep
Anorith: A rock / bug Pokemon that evolves from a Claw Fossil and can evolve into Armaldo
Armaldo: A rock / bug Pokemon that evolves from Anorith
Feebas: A water Pokemon that evolves into Milotic
Milotic: A water Pokemon that evolves from Feebas
Castform: A normal Pokemon that does not evolve
Kecleon: A normal Pokemon that does not evolve
Shuppet: A ghost Pokemon that evolves into Banette
Banette: A ghost Pokemon that evolves from Shuppet
Duskull: A ghost Pokemon that evolves into Dusclops
Dusclops: A ghost Pokemon that evolves from Duskull and can evolve into Dusknoir
Tropius: A grass / flying Pokemon that does not evolve
Chimecho: A psychic Pokemon that evolves from Chingling
Absol: A dark Pokemon that does not evolve
Wynaut: A psychic Pokemon that evolves into Wobbuffet
Snorunt: An ice Pokemon that evolves into Glalie or Froslass
Glalie: An ice Pokemon that evolves from Snorunt
Spheal: An ice / water Pokemon that evolves into Sealeo
Sealeo: An ice / water Pokemon that evolves from Spheal and can evolve into Walrein
Walrein: An ice / water Pokemon that evolves from Sealeo
Clamperl: A water Pokemon that evolves into Huntail or Gorebyss
Huntail: A water Pokemon that evolves from Clamperl
Gorebyss: A water Pokemon that evolves from Clamperl
Relicanth: A rock / water Pokemon that does not evolve
Luvdisc: A water Pokemon that does not evolve
Bagon: A dragon Pokemon that evolves into Shelgon
Shelgon: A dragon Pokemon that evolves from Bagon and can evolve into Salamence
Salamence: A dragon / flying Pokemon that evolves from Shelgon
Beldum: A psychic / steel Pokemon that evolves into Metang
Metang: A psychic / steel Pokemon that evolves from Beldum and can evolve into Metagross
Metagross: A psychic / steel Pokemon that evolves from Metang
Regirock: A rock Pokemon that does not evolve; this is a "Legendary Pokemon"
Regice: An ice Pokemon that does not evolve; this is a "Legendary Pokemon"
Registeel: A steel Pokemon that does not evolve; this is a "Legendary Pokemon"
Latias: A dragon / psychic Pokemon that does not evolve; this is a "Legendary Pokemon"
Latios: A dragon / psychic Pokemon that does not evolve; this is a "Legendary Pokemon"
Kyogre: A water Pokemon that does not evolve; this is a "Legendary Pokemon"
Groudon: A ground Pokemon that does not evolve; this is a "Legendary Pokemon"
Rayquaza: A dragon / flying Pokemon that does not evolve; this is a "Legendary Pokemon"
Jirachi: A steel / psychic Pokemon that does not evolve; this is a "Legendary Pokemon"
Deoxys: A psychic Pokemon that does not evolve; this is a "Legendary Pokemon"