In Pessoa's case, there are at least 70 heteronyms (according to the latest count by Pessoa's editor Teresa Rita Lopes); some of them know each other, and criticise and translate each other's works. Pessoa's three chief heteronyms are Alberto Caeiro, Ricardo Reis and Álvaro de Campos; the latter two consider the former their master. There are also two whom Pessoa called semi-heteronyms, Bernardo Soares and the Baron of Teive, who are semi-autobiographical characters who write in prose. There is, lastly, an orthonym, Fernando Pessoa, the namesake of the author, who also considers Caeiro his master.
The heteronyms sometimes intervened in Pessoa's social life: during Pessoa's only attested romance, a jealous Campos wrote letters to the girl, who, enjoying the game, wrote back.
| No. | Name | Type | *Notes |
| 1 | Fernando António Nogueira Pessoa | himself | Commercial correspondent in Lisbon |
| 2 | Fernando Pessoa | orthonym | Poet and prose writer |
| 3 | Fernando Pessoa | autonym | Poet and prose writer |
| 4 | Fernando Pessoa | heteronym | Poet, a pupil of Alberto Caeiro |
| 5 | Alberto Caeiro | heteronym | Poet, author of 'O guardador de Rebanhos','O Pastor Amoroso' and 'Poemas inconjuntos', master of Fernando Pessoa heteronyms, Álvaro de Campos, Ricardo Reis, António Mora and Coelho Pacheco |
| 6 | Ricardo Reis | heteronym | Poet and prose writer, author of 'Odes' and texts on the work of Alberto Caeiro |
| 7 | Frederico Reis | heteronym/para-heteronym | Essayist, brother of Ricardo Reis, upon whom he writes |
| 8 | Álvaro de Campos | heteronym | Poet and prose writer, a pupil of Alberto Caeiro |
| 9 | António Mora | heteronym | Philosopher and sociologist, theorist of Neopaganism, a pupil of Alberto Caeiro |
| 10 | Claude Pasteur | heteronym/semi-heteronym | French, translator of "CADERNOS DE RECONSTRUÇÃO PAGÃ" conducted by Antonio Mora |
| 11 | Bernardo Soares | heteronym/semi-heteronym | Poet and prose writer, author of the 'Book of Disquiet' |
| 12 | Vicente Guedes | heteronym/semi-heteronym | Translator, poet, and director of Ibis Press, author of a paper |
| 13 | Gervásio Guedes | heteronym/para-heteronym | Author of the text 'A Coroação de Jorge Quinto' |
| 14 | Alexander Search | heteronym | Poet and short story writer |
| 15 | Charles James Search | heteronym/para-heteronym | Translator and essayist, brother of Alexander Search |
| 16 | Jean-Méluret of Seoul | heteronym/proto-heteronym | French Poet and Essayist |
| 17 | Rafael Baldaya | heteronym | Astrologer and author of 'Tratado da Negação' and 'Princípios de Metaphysica Esotérica' |
| 18 | Barão de Teivo | heteronym | Prose writer, author of "Educação do Stoica" and "Daphnis e Chloe" |
| 19 | Charles Robert Anon | heteronym/semi-heteronym | Poet, philosopher and story writer |
| 20 | A. A. Crosse | pseudonym/proto-heteronym | Author and Puzzle-solver |
| 21 | Thomas Crosse | heteronym/proto-heteronym | English epic character/occultist, popularised in Portuguese culture |
| 22 | I. I. Crosse | heteronym/para-heteronym | ---- |
| 23 | David Merrick | heteronym/semi-heteronym | Poet, storyteller and Playwright |
| 24 | Lucas Merrick | heteronym/para-heteronym | Short story writer, perhaps brother David Merrick |
| 25 | Pêro Botelho | heteronym/pseudonym | Short story writer and author of Letters |
| 26 | Abílio Quaresma | heteronym/character/meta-heteronym | A character inspired by Botelho Pêro and author of short detective stories |
| 27 | Inspector Guedes | character/meta-heteronym? | A character inspired by Botelho Pêro and author of short detective stories |
| 28 | Uncle Pork | pseudonym/character | A character inspired by Botelho Pêro and author of short detective stories |
| 29 | Frederick Wyatt | alias/heteronym | Poet and prose writer (in the english language) |
| 30 | Rev. Walter Wyatt | character | Possibly brother of Frederick Wyatt |
| 31 | Alfred Wyatt | character | Another brother of Frederick Wyatt/a resident of Paris |
| 32 | Maria José | heteronym/proto-heteronym | Wrote and signed «A Carta da Corcunda para o Serralheiro» |
| 33 | Chevalier de Pas | pseudonym/proto-heteronym | Author of poems and letters |
| 34 | Efbeedee Pasha | heteronym/proto-heteronym | Author of humoristic "Stories" |
| 35 | Faustino Antunes/A. Moreira | heteronym/pseudonym | Psychologist, author of "Ensaio sobre a Intuição» |
| 36 | Carlos Otto | heteronym/proto-heteronym | Poet and author of "Tratado de Lucta Livre" |
| 37 | Michael Otto | pseudonym/para-heteronym | Probably brother of Carlos Otto who was entrusted with the translation into English of "Tratado de Lucta Livre" |
| 38 | Sebastian Knight | proto-heteronym/alias | |
| 39 | Horace James Faber | heteronym/semi-heteronym | short story writer and essayist (in English) |
| 40 | Navas | heteronym/para-heteronym | Translated Horace James Faber in Portuguese |
| 41 | Pantaleão | heteronym/proto-heteronym | Poet and prose |
| 42 | Torquato Fonseca Mendes da Cunha Rey | heteronym/meta-heteronym | Deceased author of a text, Pantaleão decided to publish |
| 43 | Joaquim Moura Costa | proto-heteronym/semi-heteronym | satirical poet, Republican activist, member of "O PHOSPHORO" |
| 44 | Sher Henay | proto-heteronym/pseudonym | Compiler and author of the preface of a sensationalist anthology in English |
| 45 | Anthony Gomes | semi-heteronym/character | Philosopher, author of "Historia Cómica do Affonso Çapateiro" |
| 46 | Professor Trochee | proto-heteronym/pseudonym | Author of an essay with humorous advice for young poets |
| 47 | Willyam Links Esk | character | Signed a letter written in English on 13/4/1905 |
| 48 | António de Seabra | pseudonym/proto-heteronym | Literary critic |
| 49 | João Craveiro | pseudonym/proto-heteronym | Journalist, follower of Sidónio Pereira |
| 50 | Tagus | pseudonym | Collaborator in "NATAL MERCURY" (Durban, South Africa) |
| 51 | Pipa Gomes | draft heteronym | Collaborator in "O PHOSPHORO" |
| 52 | Ibis | character/a pseudonym | A character from Pessoa's childhood, accompanying him until the end of his life/also signed poems |
| 53 | Dr. Gaudencio Turnips | proto-heteronym/pseudonym | Director of "O PALRADOR", English-Portuguese journalist and humorist |
| 54 | Pip | proto-heteronym/pseudonym | Poet, humorous anecdotes. Predecessor of Dr. Pancrazio |
| 55 | Dr. Pancrazio | proto-heteronym/pseudonym | Storyteller, poet and creator of charades |
| 56 | Luís António Congo | proto-heteronym/pseudonym | Collaborator in "O PALRADOR", columnist and presenter of Lanca Eduardo |
| 57 | Eduardo Lance | proto-heteronym/pseudonym | Luso-Brazilian poet |
| 58 | A. Francisco de Paula Angard | proto-heteronym/pseudonym | Collaborator in "O PALRADOR", author of «textos scientificos» |
| 59 | Pedro da Silva Salles/Zé Pad | proto-heteronym/alias | Author and director of the section of anecdotes at "O PALRADOR" |
| 60 | José Rodrigues do Valle/Scicio | proto-heteronym/alias | "O PALRADOR", author of charades and 'literary manager' |
| 61 | Dr. Caloiro | proto-heteronym/pseudonym | "O PALRADOR", reporter and author of «A pesca das pérolas» |
| 62 | Adolph Moscow | proto-heteronym/pseudonym | "O PALRADOR", novelist, author of «Os Rapazes de Barrowby» |
| 63 | Marvell Kisch | proto-heteronym/pseudonym | Author of a novel announced in "O PALRADOR", called «A Riqueza de um Doido» |
| 64 | Gabriel Keene | proto-heteronym/pseudonym | Author of a novel announced in "O PALRADOR", called «Em Dias de Perigo» |
| 65 | Sableton-Kay | proto-heteronym/pseudonym | Author of a novel announced in "O PALRADOR", called «A Lucta Aerea» |
| 66 | Morris & Theodor | pseudonym | "O PALRADOR", author of charades |
| 67 | Diabo Azul | pseudonym | "O PALRADOR", author of charades |
| 68 | Parry | pseudonym | "O PALRADOR", author of charades |
| 69 | Gallião Pequeno | pseudonym | "O PALRADOR", author of charades |
| 70 | Urban Accursio | alias | "O PALRADOR", author of charades |
| 71 | Cecília | pseudonym | "O PALRADOR", author of charades |
| 72 | José rasteiro | proto-heteronym/pseudonym | "O PALRADOR", author of proverbs and riddles |
| 73 | Nympha Negra | pseudonym | "O PALRADOR", author of charades |
| 74 | Diniz da Silva | pseudonym/proto-heteronym | Author of the poem "Loucura" and collaborator in "EUROPE" |
| 75 | Herr Prosit | pseudonym | Translator of 'O Estudante de Salamanca' by Espronceda |
| 76 | Henry More | proto-heteronym | Author and prose writer |
| 77 | Wardour | character? | Poet |
| 78 | J. M. Hyslop | character? | Poet |
| 79 | Vadooisf ? | Character? | Poet |