Neptis occidentalis, the mountain sailer, is a butterfly in the family Nymphalidae. It is found in Nigeria, Cameroon, the Democratic Republic of the Congo, Sudan, Uganda, Kenya and Tanzania. The habitat consists of montane and riparian forests.

Subspecies

  • Neptis occidentalis occidentalis (Democratic Republic of the Congo: Ituri and Kivu, southern Sudan, Uganda, Kenya, western Tanzania)
  • Neptis occidentalis batesii Hall, 1930 (Nigeria, Cameroon)