Seajets is a Greek/Cypriot ferry company founded in 1989 by Marios Iliopoulos and his father Panagiotis.

Seajets operates a fleet of passenger, freight ferry and cruiseferry services in the Aegean Sea.

[2] In 2004, Panagiotis ("Takis") Iliopoulos (1932–2022) and his son Marios founded Seajets, originally named Dolphin Sea Lines.

[3] Today, it operates a fleet of 14 high speed vessels,[4] and 3 conventional Ro-Ro ferries which services routes from the ports of Piraeus and Rafina to several Cycladic islands.

[8] As of August 2024[update], the Seajets fleet consists of the following vessels:[4] Seajets have acquired four cruise ships, three for which their plans are currently still unknown and which remain in cold lay-up,[9][10] and one which is currently undergoing refitting for a service start sometime in 2025 under their new Neonyx brand.