Himerius (disambiguation)
Himerius (variants include Himerios, Imerius, Imerio, Imier, Immer) can refer to:
- Himerius (c. 315 – c. 386), Bithynian philosopher
 - Himerius of Tarragona (fl. 385), archbishop of Tarragona (Spain)
 - Himerios (admiral) (fl. 900–920), Byzantine admiral and statesman
 - A fictional character in the novel series Monarchies of God by Paul Kearney
 - Christian saints:
- Himerius of Immertal (c. 570 – c. 620)
 - Himerius of Cremona (d. c. 560)
 - Himerius of Bosto (fl. c. 11th century)
 - Saint Camelianus (also called Himerius), bishop of Troyes (479–536 or 511–525)