De Keyser
De Keyser is a Dutch surname mostly found in Flanders.[https://familienaam.be/De_Keyser De Keyser] and [https://familienaam.be/Dekeyser Dekeyser] at familienaam.be Among variant forms are de Keijser, de Keijzer, De Keyzer, Dekeijser, DeKeyser, Dekeyser and Dekeyzer. It translates to "the emperor".[http://www.cbgfamilienamen.nl/nfb/detail_naam.php?nfd_naam=Keijzer%2C+de+%28y%29&info=aantal%20en%20verspreiding&operator=eq&taal= Keijzer, de (y)] at the Database of Surnames in The Netherlands People with this name include:
- Alexei de Keyser (1967–2004), British television producer
- David de Keyser (1927–2021), British actor
- {{interlanguage link|Désiré De Keyser|fr||nl|}} (1823–1897), Belgian architect
- Eugénie De Keyser (1918–2012), Belgian art historian
- Ethel de Keyser (1926–2004), South African anti-apartheid activist
- Harry de Keijser (1900–1995), Dutch pole vaulter and decathlete
- Hendrick de Keyser (1565–1621), Dutch sculptor and architect
- Jean-Pierre de Keyser, (born 1965) German footballer
- Marie De Keyser (1815–1879), Belgian genre and history painter
- Merten de Keyser (died 1536) French painter and publisher working in Antwerp
- Nicaise de Keyser (1813–1873), Belgian painter
- Paul De Keyser (born 1957), Belgian racing cyclist
- Pieter de Keyser (1595–1676), Dutch architect and sculptor, son of Hendrick
- Polydore de Keyser (1832–1918), British lawyer
- Raoul De Keyser (1930–2012), Belgian painter
- Thomas de Keyser (1596–1667), Dutch painter and architect, son of Hendrick
- Véronique De Keyser (born 1945), Belgian politician
- Willem de Keyser (architect) (1603-after 1674), Dutch architect and painter, son of Hendrick
- Willem de Keyser (painter) (1647–1692), Flemish painter
;De Keyzer
- Bruno de Keyzer (1949–2019), French cinematographer
- Carl De Keyzer (born 1958), Belgian photographer
- {{interlanguage link|Dirk De Keyzer|es||nl|}} (born 1958), Belgian sculptor
- Gerd de Keijzer (born 1992), Dutch racing cyclist
- Jack de Keyzer (born 1955), British-born Canadian blues musician
- Peter De Keyzer (born 1975), Belgian economist
Concatenated:
- André Dekeijser (1924–2013), Belgian contemporary sculptor
- Carole Dekeijser (1959–2008), Belgian illustrator, painter and philosopher
- Danny DeKeyser (born 1990), American ice hockey player
- Dawn DeKeyser, American television writer and producer
- Giovanni Dekeyser (born 1976), Belgian field hockey player
- Jérôme Dekeyser (born 1983), Belgian field hockey player
- {{interlanguage link|Pierre Louis Dekeyser|fr|}} (1914–1984), French zoologist
- Dekeyser's nectar bat, South American bat named after him
- Robert Dekeyser (born 1964), Belgian-German entrepreneur
- Roger Dekeyzer (1906–1992), Belgian syndicalist and politician
- Rudy Dekeyser (born 1976), Belgian molecular biologist and businessman
- Tracey DeKeyser (born 1990), American ice hockey player and coach