Karamürsel is a town and district located in northwestern Turkey, in the province of Kocaeli. The mayor is İsmail Yıldırım (AKP).
Karamürsel is on the coast of Izmit Bay and has beautiful shores. It has a famous basket known as Karamürsel basket, which is mainly used in collecting fruit like cherries, etc.. The characteristic of this handwoven basket is that it looks small to the eye but has a much bigger capacity than one would think.
Karamürsel is historically known as The Town of The Wrestlers, and was called for centuries Praenetos (Πραινετός in Greek) before its conquest by the Ottomans. It has also been well-known with its fish restaurants that also attract customers from nearby area. Handmade silk carpet production (the famous Hereke rugs are produced here too), fruit production (cherry, peach, plums, figs, pears, apples), and olive production are sources of income for the locals. It is not heavily industrialized like other parts of the province, and therefore Karamürsel's natural beauties are more intact compared to the rest of the province of Kocaeli.