Cres (pronounced [t͡srɛ̂ːs]; Italian: Cherso, German: Kersch, Latin: Crepsa, Greek: Χέρσος, Chersos) is an Adriatic island in Croatia. It is one of the northern islands in the Kvarner Gulf and can be reached via ferry from Rijeka, the island Krk or from the Istrian peninsula (line Brestova-Porozina).
With an area of 405.78 km2, Cres is the same size as the neighbouring island of Krk, although Krk has for many years been thought the largest of the islands. Cres has a population of 3,079 (2011).
Cres and the neighbouring island of Lošinj once used to be one island, but were divided by a channel and connected with a bridge at the town of Osor. Cres's only fresh water source is the Lake Vrana.