| Name | Type
|
| Odd Trick, The | short story
|
| Oh, Boy! | musical (book and lyrics)
|
| Oh, Joy! | musical (book and lyrics)
|
| Oh, Kay! | musical (book)
|
| Oh! Lady, Lady! | musical (book and lyrics)
|
| Oh, My Dear! | musical (book and lyrics)
|
| Old Reliable, The | novel
|
| One Touch of Nature | short story
|
| Only Game in Town, The | magazine article
|
| On Ocean Liners | essay
|
| On Photographs and Photographers | magazine article
|
| On the Writing of Lyrics | magazine/newspaper article
|
| Oofy, Freddie and the Beef Trust | short story
|
| Open House | short story
|
| Ordeal by Golf | short story
|
| Ordeal of Bingo Little, The | possible magazine story
|
| Ordeal of Osbert Mulliner, The | short story
|
| Ordeal of Young Tuppy, The | short story
|
| Our Boys Again | magazine article
|
| Our Christmas Pantomime - Little Red Riding Hood | possible playlet
|
| Our Man in America | magazine article series
|
| Outcast, The | poem
|
| Outline of Shakespeare, An | essay
|
| Out of Bounds | alternative story title
|
| Out of School | short story
|
| Over Seventy | autobiographical
|
