Toko or Tōkō (トーコー) is one of the following:

• a lens name by Tōkyō Kōgaku, used on three element lenses from the 1930s to the 1950s
• the Japanese company Tōkō Shashin, active in the 1950s
• the Tōkō no-need-darkroom camera released in 1930 by Tōkōdō