One-to-one or one to one may refer to:

Mathematics and communication

  • One-to-one function, also called an injective function
  • One-to-one correspondence, also called a bijective function
  • One-to-one (communication), the act of an individual communicating with another
  • One-to-one (data model), a relationship in a data model
  • One to one computing (education), an initiative for a computer for every student
  • One-to-one marketing or personalized marketing, an attempt to make a unique product offering for each customer

Music

  • One to One (band), a 1980s Canadian pop music group
  • One to One (Carole King album), 1982
  • One to One (Christine Fan album), 2005
  • One to One (Howard Jones album), 1986
  • One to One (Syreeta album), 1977
  • One to One (Ed Bruce album), 1981
  • "One to One" (Freeez song)
  • "One to One" (Joe Jackson Band song)

Other uses

  • One to One (Apple), Apple's personal training service
  • One 2 One<!-- Redirect to subsection as per WP:DABREDIR -->, a defunct British mobile telecommunications company, which became T-Mobile UK
  • One to One (TV series), an Irish TV series
  • One to One: John & Yoko, a 2024 film about John Lennon and Yoko Ono

See also

  • 1:1 (disambiguation)
  • 1-1 (disambiguation)
  • One-to-many (disambiguation)
  • Many-to-many
  • One on One (disambiguation)
  • One-way (disambiguation)