There is a total of 31390 clues beginning with on
- One of the Longs
- One of the losers in the War of the Pacific
- One of the Lost Generation
- One of the lotophagi
- One of the Louisiana Purchase negotiators
- One of the Louvre's treasures
- One of the Low Countries
- One of the Low Countries: Abbr
- One of the Lowells (1874–1925)
- One of the Lowells
- One of the lower 40
- One of the lower forty
- One of the Lower Lakes
- One of the M's in MoMA
- One of the M's in the MMRV vaccine
- One of the M's of 3M: Abbr
- One of the Magi
- One of the Magi, and namesakes
- One of the Magi
- One of the Magnificent Seven
- One of the main islands of Japan
- One of the main roles on "30 Rock"
- One of the maj leagues
- One of the major Air Commands: Abbr
- One of the major leagues, briefly
- One of the major leagues: Abbr
- One of the major networks
- One of the Major Prophets
- One of the major religions
- One of the major rockets
- One of the major world religions
- One of the majors
- One of the Mamas
- One of the Mamas and the Papas
- One of the Mandrell Sisters
- One of the Manning brothers
- One of the Manning NFLers
- One of the Manning quarterbacks
- One of the Mannings
- One of the Manns
- One of the manships
- One of the March girls
- One of the March girls
- One of the March sisters
- One of the March women
- One of the Marches
- One of the Marches
- One of the Marcoses of the Philippines
- One of the Mariana Islands
- One of the Marianas
- One of the Marianas Islands
- One of the Marianas
- One of the Mario Bros
- One of the Mario Brothers
- One of the Maritime Provinces (abbr)
- One of the Maritime Provinces: Abbr
- One of the Marsalis brothers
- One of the Marshall atolls
- One of the Marshall Islands' 24
- One of the Marshall Islands' 29
- One of the martial arts
- One of the Martins
- One of the Marx Brothers
- One of the Marx brothers plays it
- One of the Marx brothers
- One of the Marxes
- One of the Marxes
- One of the Maserati brothers
- One of the masses
- One of the Masseys
- One of the maters
- One of the Mathers
- One of the Maunas
- One of the Maverick brothers
- One of the Mavericks
- One of the Mavericks
- One of the Maxwells
- One of the Mayberry gang
- One of the McCarthys
- One of the McCartneys
- One of the McMahons of WWE
- One of the media
- One of the media
- One of the media: Abbr
- One of the media: Var
- One of the Medici
- One of the Medicis
- One of the Medicis
- One of the memorable Four Chaplains
- One of the men on "Two and a Half Men"
- One of the men waiting in "Waiting for Godot"
- One of the Menendez brothers
- One of the Mercury Seven
- One of the Mercury Seven astronauts
- One of the metalloids
- One of the mice in "Cinderella"
- One of the Mickeys
- One of the midday-sun seekers
- One of the Mideast elite
- One of the Mikes on sports radio's "Mike & Mike"