A memorandum opinion or memorandum decision is a judicial opinion which does not create precedent, persuasive or mandatory. A memorandum is often brief and written only for the purpose for announcing judgment in a particular case. By definition, they cannot by cited as case law.

Generally, memorandum opinions still follow ordinary rules, such as apply precedent and following stare decisis.

Memorandum opinions are often issued in areas of well-settled law or where a particular set of facts may create imprudent case law.

Memorandum opinions are not used in a case of first impression, where there is a lack of authority and guidance for subsequent courts.

See also

• Opinion
• Published opinion
• Plurality opinion
• Dissenting opinion