Marnette is a variant form of Marina.
Marnette is also a variant form of the English name Marni.
Marnette is not commonly used as a baby girl name. It is not in the top 1000 names. Among the family of girl names directly related to Marnette, Marina was the most widely used in 2015.
† approx English pronunciation for Marnette: M as in "me (M.IY)" ; AA as in "odd (AA.D)" ; R as in "race (R.EY.S)" ; N as in "knee (N.IY)" ; EH as in "ebb (EH.B)" ; T as in "tee (T.IY)"