A polyaxial bone anchoring device includingan anchoring element (2) comprising a shank (3) and a head (4)a receiving part (5, 5, 5") configured to pivotably receive the head (4) and comprising a coaxial bore (6 6, 6b), and a recess (9, 9) adjacent to the first end (5a) for receiving a rod (100, 101), wherein two legs (10, 11) are formed by the recessa first clamping part (13, 13, 130) configured to support the rod (100, 101) in the recess (9 9)a second clamping part (21, 21) configured to exert pressure onto the rod and extending laterally from of the coaxial bore into the recess between the legsa locking device (27) configured to exert pressure onto the second clamping part (21, 21) to secure the rod in the recesswherein the first clamping part has a rod supporting surface portion (19, 19) that extends laterally from of the coaxial bore into the recess between the leg.