Sienna Senior Living Inc. provides senior living and long-term care (LTC) services in Canada. The company operates through Retirement and LTC segments. It offers independent supportive and assisted living, memory care, and long-term care services; and management services to senior living residences. The company was formerly known as Leisureworld Senior Care Corporation and changed its name to Sienna Senior Living Inc. in May 2015. Sienna Senior Living Inc. was founded in 1972 and is headquartered in Markham, Canada.