Learnt by Level Up

These Pokémon learn Psybeam at the level specified

Name ⇧⇩	Level ⇧⇩	Type ⇧⇩
Butterfree	32	bug flying
Venonat	35	bug poison
Venomoth	38	bug poison
Golduck	27	water
Kadabra	27	psychic
Alakazam	27	psychic
Drowzee	26	psychic
Hypno	28	psychic
Exeggcute	27	grass psychic
Weezing	1	poison
Seaking	1	water
Staryu	24	water
Starmie	1	water psychic
Mr Mime	36	psychic fairy
Porygon	23	normal
Mewtwo	22	psychic
Espeon	36	psychic
Misdreavus	27	ghost
Girafarig	41	normal psychic
Remoraid	22	water
Octillery	22	water
Mantine	1	water flying
Porygon2	12	normal
Dustox	24	bug poison
Ralts	18	psychic fairy
Kirlia	18	psychic fairy
Gardevoir	18	psychic fairy
Meditite	20	fighting psychic
Medicham	20	fighting psychic
Spoink	16	psychic
Grumpig	1	psychic
Spinda	16	normal
Baltoy	11	ground psychic
Claydol	11	ground psychic
Kecleon	17	normal
Wormadam Plant	32	bug grass
Mothim	32	bug flying
Mismagius	1	ghost
Mime Jr	25	psychic fairy
Porygon Z	7	normal
Gallade	1	psychic fighting
Uxie	21	psychic
Mesprit	21	psychic
Azelf	21	psychic
Cresselia	18	psychic
Munna	11	psychic
Musharna	1	psychic
Sigilyph	18	psychic flying
Gothita	16	psychic
Gothorita	16	psychic
Gothitelle	16	psychic
Solosis	12	psychic
Duosion	12	psychic
Reuniclus	12	psychic
Elgyem	15	psychic
Beheeyem	15	psychic
Meloetta Aria	31	normal psychic
Fennekin	17	fire
Braixen	18	fire
Delphox	18	fire psychic
Vivillon	17	bug flying
Espurr	17	psychic
Meowstic Male	17	psychic
Inkay	21	dark psychic
Malamar	21	dark psychic
Hoopa	15	psychic ghost
Tapu Lele	14	psychic fairy
Magearna	1	steel fairy
Orbeetle	16	bug psychic
Hatenna	20	psychic
Hattrem	20	psychic
Hatterene	20	psychic fairy
Mr Rime	28	ice psychic
Indeedee Male	15	psychic normal
Rabsca	15	bug psychic
Flittle	19	psychic
Espathra	19	psychic
Farigiraf	19	normal psychic
Flutter Mane	7	ghost fairy
Wormadam Sandy	32	bug ground
Wormadam Trash	32	bug steel
Meloetta Pirouette	31	normal fighting
Meowstic Female	17	psychic
Alakazam Mega	28	psychic
Mewtwo Mega X	22	psychic fighting
Mewtwo Mega Y	22	psychic
Hoopa Unbound	19	psychic dark
Magearna Original	1	steel fairy
Ponyta Galar	25	psychic
Rapidash Galar	25	psychic fairy
Mr Mime Galar	28	ice psychic
Indeedee Female	15	psychic normal

Learnt through Breeding (Egg Moves)

These Pokémon learn Psybeam through Breeding (Egg Moves) at the level specified

Name ⇧⇩	Level ⇧⇩	Type ⇧⇩
Paras	0	bug grass
Psyduck	0	water
Koffing	0	poison
Goldeen	0	water
Ledyba	0	bug flying
Spinarak	0	bug poison
Chinchou	0	water electric
Surskit	0	bug water
Finneon	0	water

Learnt by Technical Machines (TMs)

These Pokémon learn Psybeam by Technical Machines the level specified

Name ⇧⇩	Level ⇧⇩	Type ⇧⇩
Slowpoke	0	water psychic
Slowbro	0	water psychic
Mew	0	psychic
Slowking	0	water psychic
Stantler	0	normal
Masquerain	0	bug flying
Sableye	0	dark ghost
Shuppet	0	ghost
Banette	0	ghost
Drifloon	0	ghost flying
Drifblim	0	ghost flying
Bronzong	0	steel psychic
Spiritomb	0	ghost dark
Lumineon	0	water
Oranguru	0	normal psychic
Sinistea	0	ghost
Polteageist	0	ghost
Calyrex	0	psychic grass
Wyrdeer	0	normal psychic
Armarouge	0	fire psychic
Scream Tail	0	fairy psychic
Iron Valiant	0	fairy fighting
Slowpoke Galar	0	psychic
Slowbro Galar	0	poison psychic
Articuno Galar	0	psychic flying
Slowking Galar	0	poison psychic
Calyrex Ice	0	psychic ice
Calyrex Shadow	0	psychic ghost
Braviary Hisui	0	psychic flying