+1
A +1 (pronounced "plus one") is a person who accompanies someone to an event. The term may also refer to:

Arts, entertainment, and media
+1 (album), 2008, by Kaela Kimura
+1 (film) (also known as Plus One), 2013
"+1" (song), by French DJ Martin Solveig
+1 Records, an extension of the music management, publicity & marketing company +1 Music
+1 (also known as Plus One), a "lifeline" in the Who Wants to Be a Millionaire? franchise

Technology
+1 button, the "like" button implemented by Google applications
+1, the country calling code (telephone calling prefix) for countries in the North American Dialing Plan, for the list of codes, see list of North American Numbering Plan area codes
+1, a suffix attached to the name of a television timeshift channel

See also
1-up
And 1 (disambiguation)
Hear, hear
Infinity + 1
Me Too (disambiguation)
One (disambiguation)
OnePlus
Plus One (disambiguation)
Successor function
UTC+01:00, a time offset one hour ahead of Coordinated Universal Time