Bayar Yesui (Mongolian: Баярын Есүй; born 21 July 2000) is a Mongolian swimmer. She competed in the women's 50 metre freestyle at the 2016 Summer Olympics and finished 60th with a time of 28.40 seconds out of 91 contestants. She did not advance to the semifinals, which required a top 16 finish in the heats. Bayar Yesui is the youngest Olympian from Mongolia. [2]