Acilius may refer to:
* The family name of any ancient Roman man of the ''
gens Acilia'' (see for list)
* A genus of diving beetles (see
Acilius (genus)), including:
**''
Acilius sulcatus''
**''
Acilius duvergeri
''Acilius duvergeri'' is a species of beetle in family Dytiscidae. It is found in Algeria, Italy, Morocco, Portugal, and Spain
, image_flag = Bandera de España.svg
, image_coat = Escudo de España (mazonado).svg
, nat ...
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