Britannia Beach (Sḵwx̱wú7mesh: Shisháyu7áy, IPA: [ʃɪʃæjʊʔaj]) is a small unincorporated community in the Squamish-Lillooet Regional District located approximately 55 kilometres north of Vancouver, British Columbia on the Sea-to-Sky Highway on Howe Sound. It has a population of about 300. It includes the nearby Britannia Creek, a small to mid-sized stream that flows into Howe Sound that was historically one of North America's most polluted waterways.