The sabbath year (shmita; Hebrew: שמיטה, literally "release"), also called the sabbatical year or shǝvi'it (שביעית‎, literally "seventh"), or "Sabbath of The Land", is the seventh year of the seven-year agricultural cycle mandated by the Torah in the Land of Israel and is observed in Judaism.

During shmita, the land is left to lie fallow and all agricultural activity, including plowing, planting, pruning and harvesting, is forbidden by halakha (Jewish law). Other cultivation techniques (such as watering, fertilizing, weeding, spraying, trimming and mowing) may be performed as a preventive measure only, not to improve the growth of trees or other plants. Additionally, any fruits or herbs which grow of their own accord and where no watch is kept over them are deemed hefker (ownerless) and may be picked by anyone. A variety of laws also apply to the sale, consumption and disposal of shmita produce. All debts, except those of foreigners, were to be remitted.

Chapter 25 of the Book of Leviticus promises bountiful harvests to those who observe the shmita, and describes its observance as a test of religious faith.

The most recent shmita year was 2021–2022 or Anno mundi 5782 in the Hebrew calendar. The next shmita cycle will be in 2028–2029, year 5789 in the Hebrew calendar.

It is still discussed among scholars of the Ancient Near East whether or not there is clear evidence for a seven-year cycle in Ugaritic texts. It is also debated how the biblical seventh fallow year would fit in with, for example Assyrian practice of a four-year cycle and crop rotation, and whether the one year in seven was an extra fallow year. Yehuda Feliks ^[he] suggests that the land may have been farmed only 3 years in seven. Elie Borowski (1987) takes the fallow year as one year in seven.

A sabbath year (shmita) is mentioned several times in the Hebrew Bible by name or by its pattern of six years of activity and one of rest:

The 2 Kings passage (and its parallel in Isaiah 37:30) refers to a sabbath (shmita) year followed by a jubilee (yovel) year. The text says that in the first year the people were to eat "what grows of itself", which is expressed by one word in the Hebrew, saphiah (ספיח). In Leviticus 25:5, the reaping of the saphiah is forbidden for a Sabbath year, explained by rabbinic commentary to mean the prohibition of reaping in the ordinary way (with, for example, a sickle), but permitted to be plucked in a limited way by one's own hands for one's immediate needs during the Sabbath year.

There is an alternative explanation used to rectify what appears to be a discrepancy in the two biblical sources, taken from Adam Clarke's 1837 Bible commentary. The Assyrian siege had lasted until after planting time in the fall of 701 BCE, and although the Assyrians left immediately after the prophecy was given (2 Kings 19:35), they had consumed the harvest of that year before they left, leaving only the saphiah to be gleaned from the fields. In the next year, the people were to eat "what springs from that", Hebrew sahish (סחיש). Since this word occurs only here and in the parallel passage in Isaiah 37:30, where it is spelled שחיס, there is some uncertainty about its exact meaning. If it is the same as the shabbat ha-arets (שבת הארץ) that was permitted to be eaten in a Sabbath year in Leviticus 25:6, then there is a ready explanation why there was no harvest: the second year, i.e. the year starting in the fall of 700 BCE, was a Sabbath year, after which normal sowing and reaping resumed in the third year, as stated in the text.