Acharei Mot, Aharei Mos, or Ahare Moth or Acharei (אַחֲרֵי מוֹת or אַחֲרֵי — Hebrew for “after the death” or “after,” fifth and sixth words or the fifth word, and the first distinctive word or words, in the parashah) is the 29th weekly Torah portion (פָּרָשָׁה, parashah) in the annual Jewish cycle of Torah reading and the sixth in the book of Leviticus. It constitutes Leviticus 16:1–18:30. The parashah is made up of 4,294 Hebrew letters, 1,170 Hebrew words, and 80 verses, and can occupy about 154 lines in a Torah Scroll (סֵפֶר תּוֹרָה, Sefer Torah).
Jews generally read it in April or early May. The lunisolar Hebrew calendar contains up to 55 weeks, the exact number varying between 50 in common years and 54 or 55 in leap years. In leap years (for example, 2014, and 2016), parashah Acharei is read separately on the 29th Sabbath after Simchat Torah. In common years (for example, 2015, 2017, and 2018), parashah Acharei is combined with the next parashah, Kedoshim, to help achieve the needed number of weekly readings.
Traditional Jews also read parts of the parashah as Torah readings for Yom Kippur. Leviticus 16, which addresses the Yom Kippur ritual, is the traditional Torah reading for the Yom Kippur morning (Shacharit) service, and Leviticus 18 is the traditional Torah reading for the Yom Kippur afternoon (Minchah) service. Some Conservative congregations substitute readings from Leviticus 19 for the traditional Leviticus 18 in the Yom Kippur afternoon Minchah service. And in the standard Reform High Holidays prayerbook (machzor), Deuteronomy 29:9–14 and 30:11–20 are the Torah readings for the morning Yom Kippur service, in lieu of the traditional Leviticus 16.
The parashah sets forth the law of the Yom Kippur ritual, centralized offerings, blood, and sexual practices.