Helen Alice Kinnear (b. May 6, 1894 - 1970) was a Canadian lawyer.
She was born in Cayuga, Ontario. She graduated and was called to the Ontario bar, to become a lawyer, in 1920. She practiced law in Port Colborne, Ontario until 1943, when she was appointed county-court judge for Haldimand County. In 1947 she was appointed judge of the Juvenile Court. She was the first woman in the British Commonwealth to be created a Kings Counsel and the first in the Commonwealth appointed to a county-court bench and the first lawyer in Canada to appear as counsel before the Supreme Court in Canada in 1935. In 1993 the Canadian Post Office issued a commemorative stamp to honour the achievements of this woman lawyer.