Mardonius is a genus of giant African millipedes in family Spirostreptidae, containing nine species:
Mardonius aculeatus Attems, 1914
Mardonius brasilianus Attems, 1950
Mardonius cerasopus Attems, 1914
Mardonius interruptus (Brölemann, 1902)
Mardonius legationis Attems 1950
Mardonius nakitawa (Silvestri, 1907)
Mardonius parvus Demange & Mauriès, 1975
Mardonius rusticus Attems, 1950
Mardonius sculpturatus Attems, 1914