出羽海部屋
is a stable of sumo wrestlers, part of the Dewanoumi group of stables. It was established in its modern form on 25 May 1998 by former "komusubi" Ryōgoku, who branched off from Dewanoumi stable. It was originally called Nakadachi stable, but when Sakaigawa-"oykakata" (the 50th "yokozuna" Sadanoyama) reached the Japan Sumo Association's mandatory retirement age in February 2003, he passed on the Sakaigawa name, and the stable was renamed. As of January 2021, it had 23 wrestlers, with two of them ranked in the two professional divisions, making it one of the more successful stables.