Nikka Costa (born Domenica Costa, June 4, 1972), is an American singer whose music combines elements of funk, soul, and blues, among other genres.

Though she is relatively unknown in the United States, she has achieved impressive commercial success overseas, most notably in Australia and Germany. She is the daughter of Don Costa, a legendary arranger and producer of pop music, with whom she recorded several albums as a child, many of which have gone platinum. Frank Sinatra, a close friend of her father's, was her godfather. She is married to her songwriting partner and producer Justin Stanley.

Nikka's no longer with Virgin Records. Her album "Pebble to a Pearl" is due to be release September 23, 2008. The first single "Stuck to You" can be heard on her Myspace Page (http://www.myspace.com/nikkacosta).