Legendary and Mythical Pokémon
71 Legendary and 23 Mythical Pokémon according to PokéAPI, by National Pokédex number.
Legendary (71)
#0144Articuno
Ice
Flying
#0145Zapdos
ElectricFlying
#0146Moltres
FireFlying
#0150Mewtwo
Psychic
#0243RaikouElectric
#0244EnteiFire
#0245Suicune
Water
#0249LugiaPsychicFlying
#0250Ho-OhFireFlying
#0377Regirock
Rock
#0378RegiceIce
#0379Registeel
Steel
#0380Latias
DragonPsychic
#0381LatiosDragonPsychic
#0382KyogreWater
#0383Groudon
Ground
#0384RayquazaDragonFlying
#0480UxiePsychic
#0481MespritPsychic
#0482AzelfPsychic
#0483DialgaSteelDragon
#0484PalkiaWaterDragon
#0485HeatranFireSteel
#0486Regigigas
Normal
#0487Giratina
GhostDragon
#0488CresseliaPsychic
#0638CobalionSteel
Fighting
#0639TerrakionRockFighting
#0640Virizion
GrassFighting
#0641TornadusFlying
#0642ThundurusElectricFlying
#0643ReshiramDragonFire
#0644ZekromDragonElectric
#0645LandorusGroundFlying
#0646KyuremDragonIce
#0716Xerneas
Fairy
#0717Yveltal
DarkFlying
#0718ZygardeDragonGround
#0772Type: NullNormal
#0773SilvallyNormal
#0785Tapu KokoElectricFairy
#0786Tapu LelePsychicFairy
#0787Tapu BuluGrassFairy
#0788Tapu FiniWaterFairy
#0789CosmogPsychic
#0790CosmoemPsychic
#0791SolgaleoPsychicSteel
#0792LunalaPsychicGhost
#0800NecrozmaPsychic
#0888ZacianFairy
#0889ZamazentaFighting
#0890Eternatus
PoisonDragon
#0891KubfuFighting
#0892UrshifuFightingDark
#0894RegielekiElectric
#0895RegidragoDragon
#0896GlastrierIce
#0897SpectrierGhost
#0898CalyrexPsychicGrass
#0905EnamorusFairyFlying
#1001Wo-ChienDarkGrass
#1002Chien-PaoDarkIce
#1003Ting-LuDarkGround
#1004Chi-YuDarkFire
#1007KoraidonFightingDragon
#1008MiraidonElectricDragon
#1014OkidogiPoisonFighting
#1015MunkidoriPoisonPsychic
#1016FezandipitiPoisonFairy
#1017OgerponGrass
#1024TerapagosNormal
Mythical (23)
#0151MewPsychic
#0251CelebiPsychicGrass
#0385JirachiSteelPsychic
#0386DeoxysPsychic
#0489PhioneWater
#0490ManaphyWater
#0491DarkraiDark
#0492ShayminGrass
#0493ArceusNormal
#0494VictiniPsychicFire
#0647KeldeoWaterFighting
#0648MeloettaNormalPsychic
#0649Genesect
BugSteel
#0719DiancieRockFairy
#0720HoopaPsychicGhost
#0721VolcanionFireWater
#0801MagearnaSteelFairy
#0802MarshadowFightingGhost
#0807ZeraoraElectric
#0808MeltanSteel
#0809MelmetalSteel
#0893ZarudeDarkGrass
#1025PecharuntPoisonGhost