Turbine vane and gas turbine

A turbine vane comprising:

• a plurality of outer shrouds that are provided along the turbine circumferential direction so as to be adjacent to each other and form an outer wall of a main passageway;
• a plurality of inner shrouds that are provided along the turbine circumferential direction so as to be adjacent to each other and form an inner wall of the main passageway;
• a airfoil body that protrudes from a front surface of the inner shroud and defines a flow of combustion gas directed from the upstream side of the main passageway toward the downstream side thereof;
• and
• a retainer that protrudes from a rear surface of the inner shroud and extends along the turbine circumferential direction,
• wherein the retainer is disposed on the downstream side in relation to an intersection point between a dividing gap of the adjacent inner shrouds in the turbine circumferential direction and a throat line which connects contact points formed between the airfoil bodies and a minimal inscribed circle formed between the adjacent airfoil bodies in the turbine circumferential direction.