Rina Matewai Ruru (5 June 1902 – 26 August 1977), known as Lena Ruru, was a notable New Zealand community leader, sportswoman, pianist and Maori welfare worker.
Of Maori descent, she identified with the Te Aitanga-a-Mahaki iwi.
She was born in Gisborne, East Coast, New Zealand in 1902.