Katamon or Qatamon (Arabic: قطمون Katamun, Hebrew: קטמון, Greek: Καταμώνας Katamónas) is a neighbourhood in south-central Jerusalem. The official Hebrew name, Gonen (גּוֹנֵן), is only used in municipal publications. Katamon is derived from the Greek κατὰ τῷ μοναστηρίῳ ("by the monastery").
From the late 14th century, the location of Katamon seem to have been identified with the home of Simeon from the Gospel of Luke, the Jerusalemite who first recognised the infant Jesus as "the Lord's Christ", i.e. the promised Messiah (Luke 2:25-32).
In 1524, after the Ottoman Turks conquered the region from the Mamluks, it was reported that a church of St Simeon, previously held by the Georgians, was now empty in the wake of Muslim attacks. In 1681 Cornelis de Bruijn made an engraving of Jerusalem, which suggested that there was an L-shaped, four-story-high tower in Katamon, confirming an early 17th-century source which mentioned a "house and tower" of "Simeon the prophet". The Greek Orthodox acquired the site in 1859 and in 1881 they built there a new church and residence for their Patriarch, incorporating the older ruins. The Greek Orthodox call it "St. Symeon of Katamonas" and believe that it is built over the tomb of Simeon, with an inscription in a cave on the grounds interpreted to indicate that it was the tomb of Simeon's priestly forefathers. In 1890 the Greek–Orthodox patriarch Nicodemus I of Jerusalem built his summer house near the monastery (since the 1960s the building serves as a disabled care center).