Udim (Hebrew: אוּדִים, lit. Firebrands) is a moshav in central Israel. Located near Netanya, it falls under the jurisdiction of Hof HaSharon Regional Council. In 2006 it had a population of 822.
The moshav was established in 1948 by Holocaust survivors. Its name is taken from Zechariah 3:2, and symbolises the fact that the founders were survivors of the Holocaust;
And the LORD said unto Satan: 'The LORD rebuke thee, O Satan, yea, the LORD that hath chosen Jerusalem rebuke thee; is not this man a brand plucked out of the fire?
Nature reserve 
South-east of the moshav is a nature reserve, first declared in 1967, and expanded in 1997, 140 dunams in total. The reserve is in an old quarry, where the water table has risen, allowing a concentration of aquatic plants to flourish. Flora includes Salix acmophylla and Tamarix trees, Rubus sanguineus, Reeds, and Cattails.
Coordinates: 32°15′58.68″N 34°51′4.68″E / 32.2663000°N 34.8513000°E