There is a total of 31382 clues beginning with on
- One, in Italian or Spanish
- One, in Italy
- One, in Italy
- One, in Juarez
- One, in Köln
- One, in Leipzig
- One, in Livorno
- One, in Madrid
- One, in Mexico
- One, in Milan
- One, in Munich
- One, in Nantes
- One, in Naples
- One, in Naples
- One, in Oaxaca
- One, in Oberhausen
- One, in Oldenburg
- One, in Orléans
- One, in Palermo
- One, in Paris
- One, in Paris
- One, in Perth
- One, in Pisa
- One, in Portuguese
- One, in Quebec
- One, in Roma
- One, in Roma
- One, in Rome
- One, in Saint-Émilion
- One, in Scotland
- One, in Spain
- One, in Spain
- One, in the Louvre
- One, in Turin
- One, in Ulm
- One, in Verdun
- One, in Vienna
- One, in Weimar
- One, in Wiesbaden
- One, in Worms
- One, in Yahtzee
- One, informally
- One, of a kind
- One, on a bill
- One, on a coin
- One, on a one
- One, on a scale of one to ten, often
- One, on coins
- One, on ones
- One, on the links
- One, on the Mohs' scale
- One, on the Oise
- One, on the one
- One, on the Riviera
- One, overseas
- One, six, etc: Abbr;
- One, some or all
- One, some, or all
- One, somewhere
- One, to 5-Down
- One, to 65-Across?
- One, to a drill sergeant
- One, to a half
- One, to a Scot
- One, to Angus
- One, to Antoine
- One, to Beethoven
- One, to begin with
- One, to Burns
- one, to Cicero
- One, to Cicero
- One, to Conchita
- One, to Fritz
- One, to Gianluigi Buffon
- One, to Goethe
- One, to Hans
- One, to Helmut
- One, to Jacques
- One, to Johann
- One, to José
- One, to Juan
- One, to Juana
- One, to Juanita
- One, to Kohl
- One, to Louis I
- One, to Marie
- One, to one
- One, to one, eg
- One, to Oppenheimer
- One, to Otto
- One, to Ouida
- One, to Pierre
- One, to some
- One, to start with
- One, to two
- One, to Wagner
- One, to Wilhelm
- One, two and three or this puzzle's title
- One, two, etc: Abbr
- One, two, or three