A solid-state imaging device includes: a substrate including a plurality of light receiving sections; an optical waveguide provided above each of the plurality of light receiving sections and surrounded by a cladding layer; a color filter provided above each of the optical waveguides; and a lens provided above the color filter, the optical waveguide including a first layer having a first refractive index and a second layer being in contact with the first layer and having a second refractive index higher than the first refractive index.