Announcing Taylor’s arrival on their X account but without further details, PAOK say: “He came from Scotland. He is ready to fight. He is ready to play. He is ready to conquer!”
Taylor made 216 appearances for Celtic, including 37 starts and six substitute appearances last season as they retained the league title and he also scored in the final as they lifted the Scottish League Cup.
Announcing his exit, Celtic thanked the defender for being “a key figure” in their successes since he signed in 2019.
Taylor won five league titles, three Scottish Cups and three League Cups, including the treble in 2022-23.
PAOK finished third behind Olympiakos and Panathinaikos in the Greek Super League last season and are seeded in the Europa League third qualifying round.