Kapaiwai Tuimacilai Mara (born between 1815 and 1820 – 6 August 1859), chiefly seafarer, and descendant of the Vunivalu of Bau. Ratu Mara's father was Ratu Vuibureta (half brother of Ratu Tanoa Visawaqa) of Bau, who was the son of Ratu , Vunivalu of Bau. He was thus not only a potential contender for the title of Vunivalu of Bau, but vasulevu to Tubou, from which came many of the great canoes on which Bau's naval might rested. His mother was Roko Mere of Tubou, Lakeba in Lau.