457 may refer to:
- The year AD 457 in the Western calendar
- The number 457
- The 457 plan, a retirement plan available to government and nonprofit employees in the United States similar to the 401(k)
- The 457 visa, the most commonly used program for employers to sponsor overseas workers to work in Australia on a temporary basis.
- The Smith & Wesson Model 457, a pistol.
This disambiguation page lists articles associated with the same number.
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