The Macrophthalmidae, commonly referred to as sentinel crabs, are a family of crabs, comprising these subfamilies and genera:^[1]

Macrophthalmidae
Macrophthalmus japonicus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Infraorder:	Brachyura
Superfamily:	Ocypodoidea
Family:	Macrophthalmidae Dana, 1851

Ilyograpsinae Števčić, 2005

• Apograpsus Komai & Wada, 2008
• Ilyograpsus Barnard, 1955

Macrophthalminae Dana, 1851

• Australoplax Barnes, 1966
• Enigmaplax Davie, 1993
• Hemiplax Heller, 1865
• Lutogemma Davie, 2008
• Macrophthalmus Desmarest, 1823
• Tasmanoplax Barnes, 1967
• Venitus Barnes, 1967

Tritodynamiinae Števčić, 2005

• Tritodynamia Ortmann, 1894