A placename: • Ellipsis of Sumas Lake: a former lake in the Fraser Lowland region, shared between British Columbia, Canada and Whatcom County, Washington, United States, which was drained to create Sumas Prairie. • Ellipsis of Sumas Prairie: • A flatland in the Fraser Lowland region, shared between British Columbia, Canada and Whatcom County, Washington, United States. • A district of Abbotsford, British Columbia, Canada. • A river in the Fraser Lowland region, whose headwaters originate on American Sumas and flows through British Columbia, Canada and Whatcom County, Washington, United States; in full, Sumas River. • Ellipsis of Sumas Mountain: • Ellipsis of American Sumas: a mountain in the Skagit Range, Whatcom County, Washington, United States. • Ellipsis of Canadian Sumas: a mountain in British Columbia, Canada. • Ellipsis of Sumas Peak: a peak on Canadian Sumas Mountain, British Columbia, Canada. • Ellipsis of District of Sumas: a former district of British Columbia, Canada in the Fraser Lowland, that was merged into Abbotsford; now called Sumas Prairie. • A former district municipality of British Columbia, Canada, that was merged into the city of Abbotsford. • A city in Whatcom County, Washington state, United States. • Ellipsis of Sumas First Nation, a tribe of Stahlo people, found in the US Pacific Northwest and the British Columbia Lower Mainland of Canada. • Ellipsis of Sumas Indian Band, a band government governing the Sumas First Nation.