+1

See also: Plus One

+1 can mean:

+1, the ITU country code for the North American Numbering Plan Area, including the United States, Canada, and parts of the Caribbean
+1, a rare or high quality version of an item in a role-playing game
Chase +1 student Visa, a VISA credit card brand
+1, a suffix attached to the name of a timeshift channel, to indicate that it plays its shows one hour later
A way of voting on mailing lists and forums, used by the Apache Software Foundation and other open source organizations
- By extension, a way to signify "yes" or "agreed" on internet forums and similar media
A notation on the guest list for night clubs and similar venues to indicate that people who do not have to pay or wait in line may also bring an additional guest