Tweedsmuir may refer to:
People Baron Tweedsmuir John Buchan, 1st Baron Tweedsmuir (1875–1940) John Norman Stuart Buchan, 2nd Baron Tweedsmuir (1911–1996) William de l'Aigle Buchan, 3rd Baron Tweedsmuir (1916–2008) John William de l'Aigle Buchan, 4th Baron Tweedsmuir (b. 1950--son of 3rd Baron) Priscilla Buchan, Baroness Tweedsmuir Susan Buchan, Baroness Tweedsmuir
Places Tweedsmuir, Scotland North Tweedsmuir Island, Nunavut, Canada South Tweedsmuir Island, Nunavut, Canada Tweedsmuir North Provincial Park and Protected Area, British Columbia, Canada Tweedsmuir South Provincial Park, British Columbia, Canada
Schools Lord Tweedsmuir Elementary School, British Columbia, Canada Lord Tweedsmuir Secondary School, British Columbia, Canada Strathcona-Tweedsmuir School, Alberta, Canada