Federation can refer to:

• Federation, a state governed under the system of federalism.
• United Federation of Planets, a fictional federation in Star Trek.
• United Federation of Planets (Star Fleet Universe), the same organisation - more or less - as portrayed in the alternate Star Fleet Universe.
• The Earth Federation, a fictional governing body of the Universal Century Gundam anime series.
• Federated school, a model of governance used by some educational institutions which is also analogous to a political federation.
• Federation of Australia, a specific historical event.
• Identity federation, a concept in identity management referring to the decentralized storage of information related to users of one or more IT systems.
• Federation (game), a text-based online RPG, and its sequel, Federation II.
• Federation (artist), a Bay Area hip-hop collective

It can also refer to:

• An organisation, such as a trade union, company or NGO, with a structure analogous to that of a political federation. In French, and thereby amongst European socialists, the term is used for the former.

Föderation | فدراسیون (ابهام‌زدائی)