Cost is the value of money that has been used to produce something and is therefore no longer available.

Cost may also refer to:

Economics

Economic cost, an overview of cost in the field of economics

• Opportunity cost, the cost of something measured by the inability to spend the money elsewhere

• Historical cost, also known as accounting cost, the original value of an economic item

• Variable cost, costs of doing business that increase or decrease with the amount of revenue, such as labor and fuel

• Fixed cost, costs of doing business that do not change, such as rent and administration

• Total cost, fixed plus variable cost

Average cost, the total cost of production divided by the number of items produced

• Average fixed cost

• Average variable cost

• Marginal cost, the decrease in costs resulting from producing more items

• Cost curve, a graph of the cost of production as a function of the number of items produced

• Harberger Tax, also known as Common Ownership Self-assessed Tax (COST)

Other uses

• Cost, Texas, an unincorporated community in the United States

• Biological cost

Court costs

• Costs (English law)

• Costs (album), a 2011 album from Gideon

• European Cooperation in Science and Technology, abbreviated COST, a European intergovernmental organization

• Costco NASDAQ ticker symbol

• The Cost (album), the sixth studio album by The Frames

• The Cost (band), an American punk rock group

• "The Cost" (The Wire), a 2002 television episode

• The Cost (1920 film), an American silent drama film

• The Cost (2022 film), an Australian revenge drama film