1-1 may refer to:
*
New Year's Day
New Year's Day is a festival observed in most of the world on 1 January, the first day of the year in the modern Gregorian calendar. 1 January is also New Year's Day on the Julian calendar, but this is not the same day as the Gregorian one. Wh ...
, a public holiday in many countries, held annually on the first of January
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Schweizer SGP 1-1
The Schweizer SGP 1-1 is an American, amateur-built, single-seat, high-wing primary glider that was designed by Ernest Schweizer and constructed by the Mercury Glider Club between 1929 and 1930.Schweizer, Paul A: ''Wings Like Eagles, The Story o ...
, an American glider design
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World 1-1
World 1-1 is the first level of ''Super Mario Bros.'', Nintendo's 1985 platform game for the Nintendo Entertainment System. The level was designed by Shigeru Miyamoto to be a tutorial for new players, orienting them to platform jumping and to the ...
, the first level of Nintendo's ''Super Mario Bros''
See also
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One-to-one (disambiguation)
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 comm ...
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