The Mainichi Ōkan (毎日王冠, mainichi ōkan) is a Grade 2 horse race in for Thoroughbred colts and fillies aged three and over run over a distance of 1,800 metres at Tokyo Racecourse.

The race is run in October and serves as a trial race for the autumn edition of the Tenno Sho.

2014, winner is received priority ballot for Tenno Sho (Autumn).

Among the winners of the race have been Katsuragi Ace, Oguri Cap, Bubble Gum Fellow, Silence Suzuka, Grass Wonder, Eishin Preston, Daiwa Major and A Shin Hikari 55 kg for three-year-olds, 57 kg for four-year-olds and above.

[2] Allowances: Penalties (excluding two-year-old race performance): Speed record: Most successful horse (2 wins):