The Blattidae is a family of the order Blattaria (cockroaches). It contains several of the most common household cockroaches.

Selected species

• Oriental cockroach (Blatta orientalis)
• American cockroach (Periplaneta americana)
• Australian cockroach (Periplaneta australasiae)
• Brown cockroach (Periplaneta brunnea)
• Smokybrown cockroach (Periplaneta fuliginosa)
• Florida woods cockroach (Eurycotis floridana)
• Common shining cockroach (Drymaplaneta communis)
• Botany Bay Cockroach (Polyzosteria limbata)