Asasekiryū Tarō (born August 7, 1981, as Badarchiin Dashnyam, Mongolian: Бадарчийн Дашням]) is a former sumo wrestler. He made his debut in January 2000, reaching the top makuuchi division in March 2003. He won four special prizes, and spent a total of five tournaments in the titled san'yaku ranks. The highest rank was sekiwake. He was a runner-up in two tournaments in 2004 and 2007. After 2013 he was mainly ranked in the lower jūryō and makushita divisions. He acquired Japanese citizenship in April 2017 and retired from active competition the following month. He became a coach at Takasago stable under the elder name Nishikijima Oyakata. In November 2020 he became head coach of Takasago stable.