Elwyn is a surname and a male given name. It may refer to:
As a surname
- Alfred L. Elwyn (1804-1884), American physician and philanthropist
- Dilys Elwyn-Edwards (1918-2012), Welsh composer and lecturer
- Glyn Elwyn, professor
- John Elwyn (1916-1997), Welsh painter
- Michael Elwyn (1942-), Welsh actor
- Thomas Elwyn (c. 1837-1888), Canadian politician
As a given name
- Elwyn Berlekamp (1940-2019), American mathematician
- Elwyn Brook-Jones (1911-1962), British actor
- Elwyn Crocker Jr., (d. 2016), American murder victim
- Elwyn Davies (1908-1986), Welsh author
- Elwyn Hartley Edwards (1927-2007), British equestrian author and judge
- Elwyn Flint (1910-1983), Australian linguist
- Elwyn Friedrich (1933-2012), Swiss ice hockey player
- Elwyn Gwyther (1921-1996), Welsh rugby union player
- Elwyn Hughes, Welsh academic
- Elwyn John (1936-2013), Welsh Anglican priest
- Elwyn Jones, multiple people
- Elwyn Roy King (1894-1941), Australian fighter ace
- Elwyn Lee, American professor and husband of American politician Sheila Jackson Lee
- Elwyn Lynn (1917-1997), Australian artist and author
- Elwyn McRoy, American basketball player-coach
- Elwyn Meader (1910-1996), American botanist
- Elwyn Morris (1921-2000), Canadian ice hockey player
- Elwyn Richardson (1925-2012), New Zealand educator
- Elwyn Roberts (1931-2009), Welsh Anglican priest
- Elwyn B. Robinson (1905-1985), American historian
- Elwyn E. Royce (1868-1960), American farmer and politician
- Elwyn Seelye (1848-1920), American historian
- Elwyn R. Shaw (1888-1950), American judge
- Elwyn L. Simons (1930-2016), American paleontologist
- Elwyn Thomas (1894-1971), American judge
- Elwyn Bernard Thomas, Welsh Anglican priest
- Elwyn Tinklenberg (1950-), American politician
- Elwyn Walters (1943-), Australian former rugby league footballer
- Elwyn Watkins (1963-2024), English politician
- Elwyn Welch (1925-1961), New Zealand conservationist and missionary
- Elwyn Brooks White (1899-1985), American author
- Saint Elwyn, an early saint or saints in Cornwall or Brittany
Other uses
Organizations
- Elwyn Inc., an American non-profit
- Israel Elwyn, the Israeli affiliate of the non-profit
Places
- Elwyn, Pennsylvania, an unincorporated community near Media
- Elwyn station, a SEPTA Regional Rail station serving Elwyn
- Elwyn Creek, a river in British Columbia
Other
- SS St. Elwyn, a British steamship sunk in World War 2
- St Elwyn's Church, Hayle, an English church
See also
- Elwin (disambiguation)
- Elven (disambiguation)
- All pages with titles beginning with Elwyn
- All pages with titles containing Elwyn