The Four Ashi (Queens) of Bhutan known as Queen Mothers of Bhutan are Ashi Dorji Wangmo Wangchuck, Ashi Tshering Pem Wangchuck, Ashi Tshering Yangdon Wangchuck, and Ashi Sangay Choden Wangchuck, all married to the fourth king, Jigme Singye Wangchuck. The Queen Mothers have played significant roles in supporting the King and contributing to various social, cultural, and philanthropic initiatives in Bhutan.