A swivel locking device for stroller wheel, comprising: a seat, a wheel bearing assembly, a locking pin, a biasing member, and an operating member. The seat and the wheel bearing assembly are coupled so as to rotate with respect to each other. The locking pin may move between a first position where the seat is coupled to suppress rotation between the seat and the wheel bearing assembly and a second position where the seat is decoupled to allow the rotation between the seat and the wheel bearing assembly. Normally, the biasing member biases the locking pin to the first position. The operating member moves between a locked position and a unlocked position. Movement of the operating member toward the locked position causes the locking pin to move toward the first position. The movement of operating member toward the unlocked position causes the locking pin to move toward the second position.