Tidhar () is a moshav in southern Israel. Located in the north-western Negev between Ofakim and Netivot, it falls under the jurisdiction of Bnei Shimon Regional Council and covers an area of around 1,000 dunams. In it had a population of .
The moshav was established in 1953 by Moroccan immigrants and refugees. Its name is taken from the Book of Isaiah, specifically Isaiah 41:19: <blockquote>I will plant in the wilderness the cedar, the acacia-tree, and the myrtle, and the oil-tree; I will set in the desert the cypress, the plane-tree, and the larch together;</blockquote> Two other nearby moshavim, Brosh (cypress) and Ta'ashur (larch) take their name from this passage and the three of them are known as the Moshavei Yahdav ().