Nitzavim, Nitsavim, Nitzabim, Netzavim, Nisavim, or Nesabim (נִצָּבִים‎—Hebrew for "ones standing," the second word, and the first distinctive word, in the parashah) is the 51st weekly Torah portion (פָּרָשָׁה‎, parashah) in the annual Jewish cycle of Torah reading and the eighth in the Book of Deuteronomy. It comprises Deuteronomy 29:9–30:20 (Deuteronomy 29:10 onwards in some versions of the Hebrew Bible). In the parashah, Moses told the Israelites that all the people stood before God to enter into the covenant, violation of which would bring on curses, but if they returned to God and heeded God's commandments, then God would take them back in love and bring them together again from the ends of the world. Moses taught that this Instruction was not beyond reach, and Moses put before the Israelites life and death, blessing and curse, and exhorted them to choose life by loving God and heeding the commandments.

The parashah is made up of 2,123 Hebrew letters, 553 Hebrew words, 40 verses, and 72 lines in a Torah Scroll. Jews generally read it in September or, rarely, late August or early October, on the Sabbath immediately before Rosh Hashanah. The lunisolar Hebrew calendar contains 50 weeks in common years, and 54 or 55 weeks in leap years. In some years (for example, 2025), Parashat Nitzavim is read separately. In other years (for example, 2024, 2026, and 2027), Parashat Nitzavim is combined with the next parashah, Vayelech, to help achieve the number of weekly readings needed. The two Torah portions are combined except when two Sabbaths fall between Rosh Hashanah and Sukkot and neither Sabbath coincides with a Holy Day. In the standard Reform prayerbook for the High Holy Days (מחזור‎, machzor), parts of the parashah, Deuteronomy 29:9–14 and 30:11–20, are the Torah readings for the morning Yom Kippur service, in lieu of the traditional reading of Leviticus 16.

In traditional Sabbath Torah reading, the parashah is divided into seven readings, or עליות‎, aliyot. In the Masoretic Text of the Tanakh (Hebrew Bible), Parashat Nitzavim is a single "open portion" (פתוחה‎, petuchah) (roughly equivalent to a paragraph, often abbreviated with the Hebrew letter פ‎, peh) and thus can be considered a single unit. Parashat Nitzavim has several further subdivisions, called "closed portion" (סתומה‎, setumah) divisions (abbreviated with the Hebrew letter ס‎, samekh). The first closed portion spans the first three readings. The second closed portion spans the fourth and fifth readings. The third closed portion is coincident with the sixth reading.

In the second reading, Moses made the covenant both with those who were standing there that day and with those who were not there that day. The second reading ends here.

In the third reading, Moses reminded the Israelites that they had dwelt in the land of Egypt and had passed through various other nations and had seen the detestable idols of wood, stone, silver, and gold that those other nations kept. Moses speculated that perchance there were among the Israelites some whose hearts were even then turning away from God to go worship the gods of those nations, who might think themselves immune, thinking that they would be safe though they followed their own willful hearts. But God would never forgive them; rather God's anger would rage against them until every curse recorded in the Torah would come down upon them and God had blotted out their names. And later generations and other nations would ask why God had done that to those people, and they would be told that it was because they forsook the covenant that God made with them and turned to other gods. So God grew incensed at that land and brought upon it all the curses recorded in the Torah, uprooted them from their soil in anger, and cast them into another land, as would still be the case. Concealed acts concerned God; but with overt acts, it was for the Israelites to apply all the provisions of the Torah. The third reading and a closed portion end here with the end of chapter 29.

In the fourth reading, Moses foretold that, after all these curses had befallen them, if they took them to heart in their exile, and they returned to God, and they heeded God's commandments with all their hearts and souls, then God would restore their fortunes, take them back in love, and bring them together again from the ends of the world to the land that their fathers possessed, and God would make them more prosperous and numerous. Then God would open their hearts to love God with all their hearts and souls, in order that they might live. The fourth reading ends here.

In the fifth reading, Moses foretold that God would then inflict all those curses on the enemies who persecuted the Israelites, and would bless the Israelites with abounding prosperity, fertility, and productivity. For God would again delight in their wellbeing, as God had in that of their fathers, since they would be heeding God and keeping the commandments once they had returned to God with all their hearts and souls. The fifth reading and a closed portion end here.

In the sixth reading, Moses said that surely, this Instruction that he enjoined upon them was not too baffling, beyond reach, in the heavens, or beyond the sea; rather it was very close to them, in their mouths and hearts. The sixth reading and a closed portion end here.