Forties may refer to:
*40s, the years 40–49 AD
*1940s, the years 1940–1949
*Long Forties, area in the North Sea
*The Shipping Forecast, Forties shipping forecast area (roughly corresponding to the Long Forties)
*Forties oilfield in the North Sea
**Forties pipeline system
*Roaring Forties, strong westerly winds found in the Southern Hemisphere
*Forty-ounce or forty, a glass bottle that holds 40 fluid ounces of malt liquor or beer
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