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Political fragmentation as a main governance problem facing metropolitan regions - existence of various organizations and territories in metropolitan regions without any coordinating framework among them-need to be treated with strategies known as "regionalism" in metropolitan government literature. All strategies of metropolitan regionalism seek to create coordination and cooperation among different independent planning and management organizations and territories in metropolitan regions. This article addresses the application of the strategies of metropolitan regionalism in Tehran metropolitan region aiming at reducing fragmentation impact. It avoids proposing any distinct "metropolitan government model" because of executive constraints in respect of legal and organizational matters in Iran. Instead it proposes a coherent complex of strategies in incrementally mode for ensuring its success;
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