What is "forum non conveniens"

n. (context legal English) A doctrine of law holding that a court should decline to hear a case if another court would provide a more convenient forum for the parties and evidence.

Forum non conveniens ( Latin for "forum not agreeing") (FNC) is a (mostly) common law legal doctrine whereby courts may refuse to take jurisdiction over matters where there is a more appropriate forum available to the parties. As a doctrine of the conflict of laws, forum non conveniens applies between courts in different countries and between courts in different jurisdictions in the same country. Note that forum non conveniens is not applicable between counties or federal districts within a state.

A concern often raised in applications of the doctrine is forum shopping, or picking a court merely to gain an advantage in the proceeding. This concern is balanced against the public policy of deferring to a plaintiff's choice of venue in claims where there may be more than one appropriate jurisdiction. The underlying principles, such as basing respect given to foreign courts on reciprocal respect or comity, also apply in civil law systems in the form of the legal doctrine of lis alibi pendens.

Forum non conveniens is not exclusive to common law nations: the maritime courts of the Republic of Panama, although not a common law jurisdiction, also have such power under more restrained conditions.