Geology
* Lias Formation, a geologic formation in France * Lias Group, a lithostratigraphic unit in western Europe * Early Jurassic, an epochPeople
* Godfrey Lias, British author * Mohd Shamsudin Lias (born 1953), Malaysian politician * Lias Andersson (born 1998), Swedish hockey playerOther uses
* ''Lias'' (journal), title of the ''Journal of Early Modern Intellectual Culture and its Sources'' * Lias, Gers, a commune of the Gers ''département'' in France * LIAS (gene), a gene that in humans encodes the protein lipoic acid synthetaseSee also
* Lyas, a commune in southern France * Lia (disambiguation) {{disambiguation, surname