Last name Ikaya (Ikaya 
) , globally, is a rare cognomen. The family name Ikaya is characteristic of the Democratic Republic of the Congo, where it is a rare surname, Japan, and Tanzania, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in the Democratic Republic of the Congo, Japan, and India. More frequently, Ikaya is the forename as well as the last name.