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, 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)