Jazero (literally: "The lake") is a reservoir, which was created in the second half of the 20th century, located in the Nad jazerom borough (city ward) of Košice, Slovakia.

[1] Jazero is the dominant feature of this part of the city and is set in the recreational area with the same name.

This recreational area includes a cable skiing system, a boat rental provider, a sandy beach, multifunctional playgrounds, children's and full-size volleyball courts, and a number of catering facilities that are open to visitors during the summer.

[citation needed] Between the lake and the river Hornad, there is a wooded area with footpaths and Fire pits for grilling as well as a cycle path for cycling and rollerblading.

[1] Košické Benátky (literally: "Kosice Venice") is an annual event in which non-traditional sailing vessels are presented upon the lake.