Tenka Sanbun no Kei: Ōmisoka New Year's Eve Special (天下三分の計 大晦日年越しスペシャル, Tenka Sanbun no Kei Ōmisoka Toshikoshi Supesharu) was a Japanese professional wrestling event co-promoted by Big Japan Pro Wrestling (BJW), DDT Pro-Wrestling (DDT) and Kaientai Dojo (K-Dojo). The event featured ten matches on December 31, 2009, at Korakuen Hall in Tokyo, Japan. It aired on Fighting TV Samurai on January 8, 2010. The event was part of the Tenka Sanbun no Kei series of shows co-produced by BJW, DDT and K-Dojo from 2007 to 2015, and the first in the New Year's Eve Pro-Wrestling brand of events.