Corythoichthys benedetto, commonly known as Benedetto's pipefish, is a species of marine fish of the family Syngnathidae. It inhabits the Indo-West Pacific, near Thailand, Myanmar, Indonesia, Papua New Guinea, and Australia. It is found on algae-covered rocky surfaces and gorgonian sea fans at depths of , where it can grow to lengths of around . It is usually found alone, although it can be found in groups of up to four individuals. This species is ovoviviparous, with males brooding when they are at lengths of .
The specific name and common name honour the late Italian prime minister Benedetto Craxi (1934-2000).
Corythoichthys benedetto grows up to lengths of . It may be identified by its body pattern of 12 thin white bars along the length of its body, each preceded by a thick red bar. These bars may be punctuated by variable-sized white ocelli.