Fire Spin is learned by 36 species by level, 92 by machine and 5 by egg

Effect, in PokéAPI's words

“Prevents the target from fleeing and inflicts damage for 2-5 turns.”

Who learns it

93 species in all, 8 of 24 games shown

Scarlet and Violet: 80 species

Species	Method	Level
Heatran	Level up, Machine	1
Chandelure	Level up, Machine	1
Volcarona	Level up, Machine	1
Volcanion	Level up, Machine	1
Charcadet	Level up, Machine	12
Armarouge	Level up, Machine	12
Ceruledge	Level up, Machine	12
Iron Moth	Level up, Machine	14
Fennekin	Level up, Machine	20
Braixen	Level up, Machine	22
Delphox	Level up, Machine	22
Litwick	Level up, Machine	24
Lampent	Level up, Machine	24
Charmander	Level up, Machine	32
Chimchar	Level up, Machine	33
Flareon	Level up, Machine	35
Monferno	Level up, Machine	39
Vulpix	Level up, Machine	40
Infernape	Level up, Machine	42
Charizard	Level up, Machine	46
Charmeleon	Machine
Ninetales	Machine
Growlithe	Machine
Arcanine	Machine
Magmar	Machine
Moltres	Machine
Dratini	Machine
Dragonair	Machine
Dragonite	Machine
Mew	Machine
Cyndaquil	Machine
Quilava	Machine
Typhlosion	Machine
Slugma	Machine
Magcargo	Machine
Houndour	Machine, Egg
Houndoom	Machine
Magby	Machine
Entei	Machine
Ho-Oh	Machine
Torchic	Machine
Combusken	Machine
Blaziken	Machine
Numel	Machine
Camerupt	Machine
Torkoal	Machine
Flygon	Machine
Altaria	Machine
Bagon	Machine
Shelgon	Machine
Salamence	Machine
Skuntank	Machine
Magmortar	Machine
Tepig	Machine
Pignite	Machine
Emboar	Machine
Hydreigon	Machine
Larvesta	Machine
Reshiram	Machine
Fletchinder	Machine
Talonflame	Machine
Litleo	Machine, Egg
Pyroar	Machine
Litten	Machine
Torracat	Machine
Incineroar	Machine
Solgaleo	Machine
Scorbunny	Machine
Raboot	Machine
Cinderace	Machine
Carkol	Machine
Coalossal	Machine
Eternatus	Machine
Fuecoco	Machine
Crocalor	Machine
Skeledirge	Machine
Chi-Yu	Machine
Roaring Moon	Machine
Koraidon	Machine
Gouging Fire	Machine

Brilliant Diamond and Shining Pearl: 14 species

Species	Method	Level
Ninetales	Level up	1
Heatran	Level up	1
Charmander	Level up	32
Chimchar	Level up	33
Ponyta	Level up	35
Rapidash	Level up	35
Flareon	Level up	35
Monferno	Level up	39
Vulpix	Level up	40
Charmeleon	Level up	42
Infernape	Level up	42
Charizard	Level up	46
Growlithe	Egg
Houndour	Egg

Sword and Shield: 53 species

Species	Method	Level
Ninetales	Level up, Machine	1
Heatran	Level up, Machine	1
Chandelure	Level up, Machine	1
Volcarona	Level up, Machine	1
Volcanion	Level up, Machine	1
Blacephalon	Level up, Machine	1
Litwick	Level up, Machine	24
Lampent	Level up, Machine	24
Charmander	Level up, Machine	32
Ponyta	Level up, Machine	35
Rapidash	Level up, Machine	35
Flareon	Level up, Machine	35
Sizzlipede	Level up, Machine	35
Centiskorch	Level up, Machine	39
Vulpix	Level up, Machine	40
Charmeleon	Level up, Machine	42
Charizard	Level up, Machine	46
Heatmor	Level up, Machine	50
Growlithe	Machine
Arcanine	Machine
Magmar	Machine
Moltres	Machine
Dratini	Machine
Dragonair	Machine
Dragonite	Machine
Mew	Machine
Magby	Machine
Entei	Machine
Ho-Oh	Machine
Torchic	Machine
Combusken	Machine
Blaziken	Machine
Torkoal	Machine
Flygon	Machine
Altaria	Machine
Solrock	Machine
Skuntank	Machine
Magmortar	Machine
Victini	Machine
Darumaka	Machine
Darmanitan	Machine
Hydreigon	Machine
Fletchinder	Machine
Talonflame	Machine
Litten	Machine
Torracat	Machine
Incineroar	Machine
Turtonator	Machine
Solgaleo	Machine
Cinderace	Machine
Carkol	Machine
Coalossal	Machine
Dracozolt	Machine

Let's Go Pikachu and Let's Go Eevee: 9 species

Species	Method	Level
Moltres	Level up	8
Flareon	Level up	17
Vulpix	Level up	21
Ponyta	Level up	26
Rapidash	Level up	26
Charmander	Level up	27
Magmar	Level up	28
Charmeleon	Level up	33
Charizard	Level up	33

Ultra Sun and Ultra Moon: 31 species

Species	Method	Level
Heatran	Level up	1, 57
Solrock	Level up	5
Litwick	Level up	7
Lampent	Level up	7
Moltres	Level up	8
Torkoal	Level up	13
Vulpix	Level up	15
Magmar	Level up	15
Magby	Level up	15
Magmortar	Level up	15
Heatmor	Level up	16
Torchic	Level up	19
Fennekin	Level up	20
Entei	Level up	22
Braixen	Level up	22
Delphox	Level up	22
Ponyta	Level up	25
Rapidash	Level up	25
Flareon	Level up	25
Volcarona	Level up	30
Chimchar	Level up	33
Monferno	Level up	39
Infernape	Level up	42
Charmander	Level up	43
Charmeleon	Level up	50
Charizard	Level up	56
Growlithe	Egg
Houndour	Egg
Pansear	Egg
Litleo	Egg
Turtonator	Egg

Sun and Moon: 31 species

Species	Method	Level
Heatran	Level up	1, 57
Solrock	Level up	5
Litwick	Level up	7
Lampent	Level up	7
Moltres	Level up	8
Torkoal	Level up	13
Vulpix	Level up	15
Magmar	Level up	15
Magby	Level up	15
Magmortar	Level up	15
Heatmor	Level up	16
Torchic	Level up	19
Fennekin	Level up	20
Entei	Level up	22
Braixen	Level up	22
Delphox	Level up	22
Ponyta	Level up	25
Rapidash	Level up	25
Flareon	Level up	25
Volcarona	Level up	30
Chimchar	Level up	33
Monferno	Level up	39
Infernape	Level up	42
Charmander	Level up	43
Charmeleon	Level up	50
Charizard	Level up	56
Growlithe	Egg
Houndour	Egg
Pansear	Egg
Litleo	Egg
Turtonator	Egg

Omega Ruby and Alpha Sapphire: 30 species

Species	Method	Level
Heatran	Level up	1, 57
Solrock	Level up	5
Litwick	Level up	7
Lampent	Level up	7
Moltres	Level up	8
Torkoal	Level up	13
Vulpix	Level up	15
Magmar	Level up	15
Magby	Level up	15
Magmortar	Level up	15
Heatmor	Level up	16
Torchic	Level up	19
Fennekin	Level up	20
Entei	Level up	22
Braixen	Level up	22
Delphox	Level up	22
Ponyta	Level up	25
Rapidash	Level up	25
Flareon	Level up	25
Volcarona	Level up	30
Chimchar	Level up	33
Monferno	Level up	39
Infernape	Level up	42
Charmander	Level up	43
Charmeleon	Level up	50
Charizard	Level up	56
Growlithe	Egg
Houndour	Egg
Pansear	Egg
Litleo	Egg

X and Y: 30 species

Species	Method	Level
Heatran	Level up	1, 57
Litwick	Level up	7
Lampent	Level up	7
Moltres	Level up	8
Solrock	Level up	9
Vulpix	Level up	12
Magmar	Level up	15
Magby	Level up	15
Magmortar	Level up	15
Heatmor	Level up	16
Torkoal	Level up	17
Fennekin	Level up	20
Entei	Level up	22
Braixen	Level up	22
Delphox	Level up	22
Ponyta	Level up	25
Rapidash	Level up	25
Flareon	Level up	25
Torchic	Level up	25
Volcarona	Level up	30
Chimchar	Level up	33
Monferno	Level up	39
Infernape	Level up	42
Charmander	Level up	43
Charmeleon	Level up	50
Charizard	Level up	56
Growlithe	Egg
Houndour	Egg
Pansear	Egg
Litleo	Egg

Changed over time

2 changes since Generation I

1. Through Gen IVPower 1535 from Black and White, Generation V
2. Through Gen IVAccuracy 70%85% from Black and White, Generation V