Cyriel may refer to:

  • Cyriel Barbary (1899–2004), the last known Belgian veteran of the First World War
  • Cyriel Buysse (1859–1932), Flemish naturalist author and playwright
  • Cyriel Coupe (1918–1998) (pseudonym Anton van Wilderode), Belgian priest, teacher, writer and poet
  • Cyriel Dessers (born 1994), professional footballer
  • Cyriel Geerinck (1889–1955), Flemish educator, poet, writer and stage director
  • Cyriel Omey (1897–1977), Belgian racing cyclist
  • Cyriel Pennartz (born 1963), Dutch neuroscientist, professor at the University of Amsterdam
  • Cyriel Vanoverberghe (1912–1995), Belgian racing cyclist
  • Cyriel Verschaeve (1874–1949), Flemish nationalist priest and writer