Asashōryū Akinori (朝青龍 明徳), born as Dolgorsuren Dagvadorj (Долгорсүрэн Дагвадорж) on September 27, 1980 in Ulaanbaatar, Mongolia, is the first Mongolian sumo wrestler to reach the rank of yokozuna. He is also currently (in January 2005) the only active yokozuna.

Unlike his Hawaiian predecessors Akebono and Musashimaru, Asashoryu is relatively lightweight at 137 kilograms, around 20 kilograms below the average. He has successfully relied on speed and technique to compete against his, often much heavier, oppponents. After his debut in 1999, it took Asashoryu only 24 tournaments to win his first top division championship, the quickest achievement of this since the sport adopted its current format of six championships a year in 1958.

On January 30, 2003 Asashoryu was granted the title of yokozuna, the highest rank in sumo. While his first championship as yokozuna ended in a disappointing 10-5 record, he has since won a total of 10 tournaments (including the first two which he won as an Ozeki). The highlight of his career to date is a run of four consecutive tournament victories from January to July 2004. This included two consecutive perfect 15-0 wins (zensho yusho) in January and March of that year. On November 27, 2004, Asashoryu became the first wrestler to win five tournaments in a year since Chiyonofuji achieved the feat 18 years ago, and won his ninth Emperor's Cup.

Asashoryu married his Mongolian fiancee in December 2002. An official ceremony was later held in August 2004. The hectic social round that inevitably follows Japanese weddings may explain his disappointing performance in the Autumn basho.

Asashoryu has been criticized for infractions of the strict code of conduct expected of top sumo wrestlers. His transgressions include becoming the first yokozuna in history to be disqualified in a match (for pulling an opponent's hair), being photographed in a suit (instead of a traditional Japanese costume) and refusing to adopt Japanese citizenship.