Ōkubo Tadamasa

Ōkubo Tadamasa
大久保忠方
Born(1692-07-28)July 28, 1692
Edo, Japan
DiedNovember 20, 1732(1732-11-20) (aged 40)
Edo, Japan
Other namesKaga no Kami
OccupationDaimyō of Odawara Domain (1713–1732)
Spousedaughter of Yanagisawa Yoshiyasu

Ōkubo Tadamasa (大久保 忠方; June 15, 1692 – November 20, 1732) was the 4th daimyō of Odawara Domain in Sagami Province, (modern-day Kanagawa Prefecture) in mid-Edo period Japan. His courtesy title was Kaga no Kami.