There is a total of 136549 clues beginning with a
- An official language of the Northwest Territories
- An official of the Yankees
- An official seal
- An official UN language: Abbr
- An official under Nero
- An offspring of Juno
- An oft-repeated truth
- An oil man
- An oil producer
- An oil source
- An oil, maybe
- An oilman
- An oily hydrocarbon
- An ointment
- An ointment
- An OK city
- An OK city?
- An Okla native
- An old Age
- An old Burmese capital
- An old campaigner
- An old canal
- An old countrywoman
- An old couple fell in it
- An old firearm, forerunner of the field gun
- An old flame's pastime?
- An old game
- An old glory
- An old gym sock may have one
- An old Irish tongue
- An old king
- An old man from the country
- An old man with a scythe
- An old man
- An old master
- An old mother
- An old musician
- An old one may need a key
- An old one might be bald
- An old saw, with 31, 40, 46, 51, 57, 66 and 67 Across
- An old saying
- An old secretary might sit in one
- An old sport
- An old story
- An old story from Paul?
- An old syllable meaning "before"
- An old T-shirt might be used as one
- An old tire, perhaps
- An old tongue
- An old TV "Squad"
- An old Warner Bros production?
- An old woman or a Pontiac
- An old-fashioned gremlin
- An old-fashioned virtue
- An old-timer
- An older brother of Seth
- An older one may be beaten
- An Olds
- An oldtime auto
- An oleoresin
- An oleoresin
- An Olin
- An olive is one
- An Oliver
- An Olivier co-star: 1939
- An Olivier role
- An Olsen twin
- An Olympian
- An Olympian from here might have rivalries with Olympians from BRA and ARG
- An Olympian may thrust it
- An Olympic event
- An Olympic medal
- An Olympic ring
- An Olympic swimmer needs a big one
- An Olympic swimming champ: 1932
- An Olympic team
- An Olympic twin
- An Olympics chant
- An Olympics site: 1988
- An Olympics star in 1936
- An omega stands for it
- An omen might do it well
- An omission in printing
- An Onassis nickname
- An Onassis, for short
- An onion is one
- An onion, from the Latin
- An onion
- An only beloved child
- An Ono of note
- An op-ed has one
- An OPEC land
- An open and ___
- An opening line
- An opera voice
- An operatic "Chorus"
- An operatic plant?
- An operative
- An operator may call on one
- An operator may help place one