New Year's is a colloquial term with unclear definition and may refer to:
- New Year, the beginning of the calendar year
- New Year's Eve, the last day of the Gregorian calendar year
- Hogmanay, Scottish celebration of New Year
- New Year's Day, the first day of the year in the Gregorian calendar
See also
- New Year's Day (disambiguation)
- New Year (disambiguation)
- Happy New Year (disambiguation)
- Up Helly Aa
- New Year's resolution
- Christmas and holiday season