There is a total of 85689 clues beginning with o
- One of David's compositions
- One of David's hymns
- One of David's men
- One of David's mighty men
- One of David's mighty men
- One of David's officers
- One of David's song leaders
- One of David's songs
- One of David's songs
- One of DC Comics' Teen Titans
- One of de Gaulle's concerns
- One of de Gaulle's names
- One of De Gaulle's names
- One of Deep Blue's men
- One of Degas' names
- One of Denmark's oldest cities
- One of Di's in-laws
- One of diamond trio
- One of diamonds?
- One of Diana's realms
- One of Dick and Dan's ensemble
- One of Dickens' Chuzzlewits
- One of die Planeten
- One of Dinah's avengers
- One of Disney's latest heroes
- One of Disney's Mouseketeers
- One of Disney's official eleven
- One of Disneyland's original attractions
- One of distinguished valor
- One of Dixie's problems
- One of Doc's cohorts
- One of Doc's companions
- One of Doc's septet
- One of dogdom's "gentle giants"
- One of Donald Duck's nephews
- One of Donald Trump Jr's parents
- One of Donald Trump's Atlantic City properties, casually
- One of Donald Trump's exes
- One of Donald's exes
- One of Donald's nephews
- One of Donald's pair
- One of Dorothy Gale's pair
- One of Dorothy's companions in Oz
- One of Dorothy's friends
- One of Dostoevsky's "Brothers Karamazov"
- One of Dostoevsky's books (with "The")
- One of dozens on a rack, some of which are super-ugly
- One of dozens, for millions
- One of Dr Freud's pupils
- One of Dr Malan's forebears
- One of Dracula's 5 Across
- One of Dracula's forms
- One of Dubya's advisers
- One of Dubya's brothers
- One of Dubya's frat brothers
- One of Duisburg's rivers
- One of Dumas' trio
- One of Dumas's dashing trio
- One of Dumas's Musketeers
- One of Dumbo's "wings"
- One of Dustin's co-stars in "Tootsie"
- One of dwindling popularity
- One of Dylan's instruments
- One of ee cummings's E's
- One of earliest rationed items
- One of early Hollywood's "Big Five"
- One of earth's axis of rotation
- One of Earth's treasures
- One of Eden's outcasts
- One of Edgar Bergen's aides
- One of Edison's 1,000+
- One of Edison's 1,000-plus
- One of Edison's 1000+
- One of Edison's inventions
- One of Edison's names
- One of Edison's names
- One of Edna Ferber's best novels
- One of Edna Ferber's novels
- One of Edward's sisters in "Twilight"
- One of Egypt's "Amarna kings"
- One of Egypt's boundaries
- One of Egypt's plagues
- One of Eichmann's captors
- One of eight
- One of eight "a-milking"
- One of eight baby teeth
- One of eight Brit kings
- One of eight Eng kings
- One of eight English kings, to a 45-Across
- One of eight English kings: Abbr
- One of eight famous animals
- One of eight for Inky the Octopus
- One of eight for Mickey
- One of eight for Stephen Sondheim
- One of eight in "Old MacDonald Had a Farm"
- One of eight in "The 12 Days of Christmas"
- One of eight in "The Twelve Days of Christmas"
- One of eight in a cup
- One of eight in a massive birth
- One of eight in a V8