Metzora, Metzorah, M'tzora, Mezora, Metsora, M'tsora, Metsoro, Meṣora, or Maṣoro (מְצֹרָע‎—Hebrew for 'one being diseased', the ninth word, and the first distinctive word, in the parashah) is the 28th weekly Torah portion (פָּרָשָׁה‎, parashah) in the annual Jewish cycle of Torah reading and the fifth in the Book of Leviticus. The parashah deals with ritual impurity. It addresses cleansing from skin disease (צָּרַעַת‎, tzara'at), houses with an eruptive plague, male genital discharges, and menstruation. The parashah constitutes Leviticus 14:1–15:33. The parashah is made up of 4,697 Hebrew letters, 1,274 Hebrew words, 90 verses, and 159 lines in a Torah Scroll (סֵפֶר תּוֹרָה‎, Sefer Torah).

Jews generally read it in April or, rarely, in 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, 2024 and 2027), Parashat Metzora is read separately. In common years (for example, 2025, 2026, and 2028), Parashat Metzora is combined with the previous parashah, Tazria, to help achieve the needed number of weekly readings.

In traditional Sabbath Torah reading, the parashah is divided into seven readings, or עליות‎, aliyot.

In the first reading, God told Moses the ritual for cleansing one with a skin disease. If the priest saw that the person had healed, the priest would order two live clean birds, cedar wood, crimson stuff, and hyssop. The priest would order one of the birds slaughtered over fresh water and would then dip the live bird, the cedar wood, the crimson stuff, and the hyssop in the blood of the slaughtered bird. The priest would then sprinkle the blood seven times on the one who was to be cleansed and then set the live bird free. The one to be cleansed would then wash his clothes, shave off his hair, bathe in water, and then be clean. On the eighth day after that, the one being cleansed was to present two male lambs, one ewe lamb, choice flour, and oil for the priest to offer.

In the second reading, the priest was to kill the lamb and put some of its blood and the oil on the ridge of the right ear, the right thumb, and the right big toe of the one being cleansed, and then put more of the oil on his head.

In the third reading, if the one being cleansed was poor, he could bring two turtle doves or pigeons in place of two of the lambs.

In the fourth reading, God then told Moses and Aaron the ritual for cleansing a house with an eruptive plague. The owner was to tell the priest, who was to order the house cleared and then examine it. If the plague in the walls was greenish or reddish streaks deep into the wall, the priest was to close the house for seven days. If, after seven days, the plague had spread, the priest was to order the stones with the plague to be pulled out and cast outside the city. The house was then to be scraped, the stones replaced, and the house replastered. If the plague again broke out, the house was to be torn down. If the plague did not break out again, the priest was to pronounce the house clean. To purge the house, the priest was to take two birds, cedar wood, crimson stuff, and hyssop, slaughter one bird over fresh water, sprinkle on the house seven times with the bird's blood, and then let the live bird go free.

In the fifth reading, God then told Moses and Aaron the ritual for cleansing a person who had a genital discharge. When a man had a discharge from his genitals, he was unclean, and any bedding on which he lay and every object on which he sat was to be unclean. Anyone who touched his body, touched his bedding, touched an object on which he sat, was touched by his spit, or was touched by him before he rinsed his hands was to wash his clothes, bathe in water, and remain unclean until evening. An earthen vessel that he touched was to be broken, and any wooden implement was to be rinsed with water. Seven days after the discharge ended, he was to wash his clothes, bathe his body in fresh water, and be clean. On the eighth day, he was to give two turtle doves or two pigeons to the priest, who was to offer them to make expiation.