Chemainus /ʃiːˈmeɪnəs/ is a community on the east coast of Vancouver Island, British Columbia, Canada.
Founded as a logging town in 1858, the town is now famous for its 39 outdoor murals. This outdoor gallery has given birth to many businesses, including a theatre, antiques dealers, and eateries. The tourist industry stemming from the murals helped rejuvenate the town after its large sawmill closed in the early 1980s and was replaced by a smaller but far more efficient mill. A resident of Chemainus is known as a Chemainiac.
The name "Chemainus" comes from the native shaman and prophet "Tsa-meeun-is" (Broken Chest). Legend says that the man survived a massive wound in his chest to become a powerful chief. His people took his name to identify their community, Chemainus First Nation.