To miniaturize a fluid transmission device by improving the arrangement and the shape of each member.

In the fluid transmission device 1 which stores a fluid coupling composed of an annular pump impeller 8 and a turbine runner 9 arranged opposite to each other in a rotating input member 2 housing the pump impeller 8 and the turbine runner 9, and has a lockup clutch 13 for directly connecting the pump impeller 8 to the turbine runner 9, a damper 4 which connects the input member 2 to the pump impeller 8 and performs shock absorption between the input member 2 and the pump impeller 8 is arranged at one side in the axial direction A1 across the fluid coupling, and the lockup clutch 13 is arranged opposite to the damper 4 across the fluid coupling.