Kahe Te Rau-o-te-rangi (died c. 1871), also known as Betty Nicoll, was a New Zealand leader, trader and innkeeper. She descended from the iwi (tribes) of Ngāti Toa, Ngāti Mutunga and Te Āti Awa. She is known for swimming 11km (7 miles), with her baby daughter strapped to her back, to raise the alarm after a war party from the south attacked her tribe. She was one of only five women to sign the Treaty of Waitangi, and was known as a woman of great mana. In later life, she and her husband kept an inn at Paekākāriki.