Nicasius

Nicasius was a Roman cognomen, whose variants include Nicasio, Nicaise, and Necaise. It can refer to:

Saints

• Nicasius of Rheims, martyr (5th century; feast 14 December)
• Nicasius of Dijon or Nicasius of Die (4th century; feast 20 March), bishop at the first Council of Nicea
• Nicasius, Quirinus, Scubiculus, and Pientia (3rd century; feast 11 October), martyrs; the first is sometimes identified as Nicasius of Rheims.
• Nicasius of Sicily (Nicasio Burgio, Nicasius Martyr, Nicasius de Burgio) (died 1187; feast 1 July), martyred Knight Hospitaller

Other

• Nicasio, California, a census designated place in Marin County
• Nicasius le Febure
• Nycasius de Clibano ()
• Nicasius Russell (died 1646), goldsmith to Anne of Denmark
• Nicasio Silverio (born 1930), Cuban swimmer
• Nicasius, first bishop of Rouen ()
• Alberto Nicasio (1902–1980), Argentinian artist
• Juan Nicasio (born 1986), Dominican baseball pitcher
• Nicasius de Vries (born 1995), Dutch racing driver
• Viviane Nicaise (born 1952), Belgian cartoonist and colorist