A caïque (Greek: καΐκι, kaiki, from Ottoman Turkish: قایق, romanized: kayık) is a traditional fishing boat usually found among the waters of the Ionian or Aegean Sea, and also a light skiff used on the Bosporus. It is traditionally a small wooden trading vessel, brightly painted and rigged for sail. The caïque is also a typical case of positioning the widest beam far aft, with a long sharp bow.

Caïques are often built on the foreshore in a shipyard, from pine wood.

The craft's hull is built with sawn ribs and a timber keel, stem, etc. covered with carvel planking, terminated with the deck. The frame of the craft is often painted with orange primer to preserve and seal the timber. The caïque usually has a short mast.

A bowsprit is stayed by rigging. In the stern of the caïque the predominant form is the tiller. These wooden steering arms are sometimes carved in a dog's or animal's face. The caïque often has a horizontal windlass mounted over the bow. The bow is also known in Greek as the proura or plowri, similar to the English prow.

Most caïques are painted white to counter the powerful sun, with the strakes and topsides in vivid chromatic colors. The boat's name is painted or carved on a tablet on the planking below the bow.

Each caïque is unique. Most are built from the boatbuilder's craft and memory, not from plans. The bow post distinguishes the caïque from other Mediterranean working boats.

Traditionally, the caïque was used for fishing and trawling. Lately, it has become a short excursion vessel, and former fishermen make money from the summer tourist trade on busy islands such as Corfu and Mykonos.

The art of the boatbuilder is dying as plastic and fiberglass crafts supersede wooden crafts.