- O bonequinho de massa
- O Destino dos Elfos 1: Os Guerreiros da Armadura de Ferro
- O Destino dos Elfos 2: O Coração de Pedra
- O Destino dos Elfos 3: As Tumbas Esquecidas
- O Destino dos Elfos 4: A Flauta Encantada
- O dia mais frio do ano
- O día despois do día
- O encantador de livros
- O Filho da Bruxa
- O gato Milu
- O girafă în spațiu și alte șapte lumi ascunse
- O iarnă de povești
- O jardim Encantado
- O krasnoludkach i sierotce Marysi
- O livro das mágicas do Menino Maluquinho
- O maravilhoso mágico de Oz
- O maravilhoso Mágico de Oz
- O menino que foi ao Vento Norte
- O mundo cá tem fronteira
- O Orbe de Kandra (Oliver Blue e a Escola de Videntes — Livro Dois)
- O Pequeno Príncipe
- O príncipe gato e a Armada da Noite
- O que dizem as flores e outras histórias de avó
- O Quidditch Através Dos Tempos
- O sonho de uma planta chamada Onze-horas
- O talismã do poder
- O túmulo do Khan - Last descendants - vol. 2
- O Urso Polar e o Papai Noel
- Obsidiáni (Oliver Blue a Škola pro Vidoucí—Kniha třetí)
- Ocean Alliance
- Ally the Dolphin Fairy (Ocean Fairies #1)
- Amelie the Seal Fairy (Ocean Fairies #2)
- Pia the Penguin Fairy (Ocean Fairies #3)
- Tess the Sea Turtle Fairy (Ocean Fairies #4)
- Stephanie the Starfish Fairy (Ocean Fairies #5)
- Whitney the Whale Fairy (Ocean Fairies #6)
- Courtney the Clownfish Fairy (Ocean Fairies #7)
- Odd and the Frost Giants
- Oddity
- Of Darkest Valor
- OH Ho and BO
- Oh I Wish I Was a Fairy for the Day
- Oh, Baby! #3
- Ohnivé krídla 1 - Proroctvo o dráčikoch
- Okelani's Enchanted Wheelchair Space Bound!
- Old MacDonald Heard a Parp from the Past
- Old-time Stories, Fairy Tales and Myths Retold by Child of E. Louise Smythe (Illustrated)
- Olina and the Magical Christmas Cairn
- Olina and the Mystery of the Lost Hare
- Olina og den Magiske Julevarde
- Olina og Havfeernes Skat
- Olina og Mysteriet om den Forsvundne Hare
- Oliver and the Ogress
- Oliver Blue und die Schule für Seher Bündel: Bücher 1-4
- Oliver Blue à l’École des Prophètes (Tomes 1 et 2)
- Oliver Blue à l’École des Prophètes (Tomes 1, 2, et 3)
- Oliver Blue à l’École des Prophètes (Tomes 1-4)
- Oliver Blue à l’École des Prophètes (Tomes 2 et 3)
- Oliver Blue à l’École des Prophètes (Tomes 3 et 4)
- Oliver’s Otter Phase
- Olivia Brophie and the Pearl of Tagelus
- Olivia Brophie and the Sky Island
- Olivia Nibblesqueak's Messy Mischief (Magic Animal Friends #9)
- Omas rettet man mit Keksen
- Omas zauberhafte Geschichten
- Ombra mondo di stelle
- Ombres sur les jeux
- OMG... I Did it Again?!
- OMG... Is He Also a Witch?!
- On n’a pas fait exprès!
- On the Edge of the Dark Sea of Darkness
- On Thin Ice (Diary of an Ice Princess #3)
- On Your Mark, Get Set, Laugh! #13
- Once a Year the Fairies Appear
- Once Upon a Curse
- Once Upon a Dwarf Village
- Once Upon a Family
- Once Upon a Magic Book
- Once Upon a Unicorn
- Once Upon Another Time
- One Dark Hallow's Eve
- One Jar of Magic
- One Mike
- One Unicorny Day
- One Witch at a Time
- Only You Can Save Mankind
- Onnellinen perhe
- Onyeka and the Academy of the Sun
- Oona
- Opal Moonbaby and the Summer Secret
- Opal Moonbaby: Opal Moonbaby and the Best Friend Project
- Open Wide #23
- Opowieści z Narnii. Tom 1. Lew, Czarownica i stara szafa
- Opowieści z Narnii. Tom 2. Książę Kaspian
- Opowieści z Narnii. Tom 3. Podróż „Wędrowca do Świtu”
- Opowieść z Krainy Elfów 1 - Rycerz Dzikiej Róży
- Opowieść z Krainy Elfów 2 - Czarodziejka Czarna Kruczyca
- Opowieść z Krainy Elfów 3 - Miecz w smoczej jaskini
- Opération : Tempête de l’Hiver
- Oracle in the Mist
- Ordinary Magic
- Origami Magic
- Origen
- Origin
- Orion e o Escuro
- Orphan Island
- Os caçadores de lendas
- Os Contos de Beedle o Bardo
- Os Seres Encantados do Mar
- Os últimos Heróis
- Osiris Saluki
- Ostatnia bitwa
- Osud Elfů 1: Obrnění válečníci
- Osud Elfů 2: Srdce z kamene