The name 'Jacob', masc. proper name, name of O.T. patriarch, son of Isaac and Rebecca and father of the founders of the twelve tribes, from L.L. Jacobus, from Gk. Iakobos, from Heb. Ya'aqobh, lit. "one that takes by the heel" (Gen. xxviii.12), a derivative of 'aqebh "heel."
List of saints with this name:
- Patriarch Jacob, (December 1)
- St. Jacob the deacon, son of Matthan (Sunday before Christmas December 18) Gr. Ματθάν
- St. Jacob, Bishop of Nisibeos (January 13), Gr. Νισίβεως
- St. Jacob (January 28)
- St. Jacob (February 6)
- St. Jacob (February 27)
- St. Jacob the Martyr (March 7)
- St. Jacob the "Omologitis", Gr. Ομολογητής (March 21)
- St. Jacob the Priest-Martyr (April 10)
- Apostle Jacob (April 30 and June 30), see also Apostle James (son of Zebedee)
- St. Jacob (June 13)
- St. Jacob of Alaska (July 26)
- St. Jacob the Martyr (August 9)
- St. Jacob (August 16)
- St. Jacob, the Virin-Martyr (A) (September 22 and October 10)
- St. Jacob, the Virgin-Martyr (B) (September 22 and October 10)
- Apostle Jacob (October 9 and June 30), see also Apostle James (son of Alphaeus)
- St. Jacob (October 21)
- St. Jacob the Brother of God, Gr. Άδελφοθέου, (October 23), see Apostle James the Just also commemorated December 26 or December 30
- St. Jacob, Bishop of Migdonia (October 31), Gr. Μυγδονίας
- St. Jacob, Priest-martyr (November 1
- St. Jacob the deacon, Virgin-Martyr (November 1)
- St. Jacob of Kastoria, Gr. Καστοριά, or from Iveron, Gr. ή Ίβηροσκητιώτης, Virgin New-Martyr (November 1 and January 28 and November 2)
- St. Jacob the "Anahoritis", Gr. Αναχωρητής, (November 26)
- St. Jacob, Bishop of Rostovias ([[November 27)) - Russian
- St. Jacob of Persia the Great-Martyr (November 27)