Gregory Tarchaneiotes (Greek: Γρηγόριος Ταρχανειώτης, Italian: Gregorio Tracanioto or Tracamoto) was a protospatharius and the long-reigning catepan of Italy from 998 to 1006. In December 999, and again on February 2, 1002, he reinstituted and confirmed the possessions of the abbey and monks of Monte Cassino in Ascoli. In 1004, he fortified and expanded the castle of Dragonara on the Fortore. He gave it three circular towers and one square one. He also strengthened Lucera.