The term assertion has several meanings:

• Assertion (computing), a computing programming technique
• Logical assertion, logical assertion of a statement
• Patent assertion, the enforcement of patent rights, usually by litigation against an infringing party
• Assertions (auditing), used in the context of a financial statement audit
• Assertions are also a kind of speech act.

See also

• Affirmation
• Assertiveness
• Ipse dixit, an "Unsupported Assertion"
• Sentence (linguistics)