411 may refer to:
- The year 411, the four hundred and eleventh year of the Gregorian calendar
- 4-1-1, a telephone directory assistance number in the United States and Canada
- By extension, a slang term for "information"
- The 411, British R&B group
- 4:1:1 chroma subsampling
- Volkswagen 411, a car from the late 1960s
- Bristol 411, a high-performance hand-built luxury car from the 1970s
- 411 (anthology), a three issue anthology, published by Marvel Comics, consisting of short-stories concerning terrorism
- Kambo, 411 is used as a nickname for Kambo, Norway
- .411 is also the extension for files storing thumbnail-sized versions of pictures taken by early models of SONY's Mavica cameras.
- 411 Video Magazine, a skateboarding video series
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