title: Sadayuki
text: # Sadayuki
  
  Sadayuki (written: 貞行 or 定行) is a masculine Japanese given name. Notable people with the name include:
  
  * Ōhikari Sadayuki (大晃 定行, 1927–1996), Japanese sumo wrestler
  * Wainai Sadayuki (和井内 貞行, 1858–1922), Japanese businessman
  