Agama [[Yahudi Ortodoks]] adalah sebutan kolektif untuk cabang-cabang tradisionalis dari [[agama Yahudi]], yang berusaha mempertahankan segenap keyakinan dan pengamalan agama Yahudi warisan leluhur, dan yang bersatu menentang berbagai tantangan [[modernitas]] dan [[sekularisasi]]. <!--[[Theology|Theologically]], it is chiefly defined by regarding the [[Torah]], both [[Written Torah|Written]] and [[Oral Torah|Oral]], as literally [[Revelation|revealed]] by God on [[biblical Mount Sinai]] and faithfully transmitted ever since. The movement advocates a strict observance of ''[[halakha]]'' (Jewish Law), which is to be interpreted only according to received methods due to its divine character. Orthodoxy considers ''halakha'' as eternal and beyond historical influence, being applied differently to changing circumstances but basically unchangeable in itself.
Orthodox Judaism is not a centralized denomination. Relations between its different subgroups are sometimes strained and the exact limits of Orthodoxy are subject to intense debate. Very roughly, it may be divided between [[Haredi Judaism]], which is more conservative and reclusive, and [[Modern Orthodox Judaism]], which is relatively open to outer society. Each of those is itself formed of independent streams. They are almost uniformly exclusionist, regarding Orthodoxy as the only authentic form of Judaism and rejecting all non-Orthodox interpretations as illegitimate.