Zemplínska šírava
Zemplínska šírava
Location	Michalovce district
Coordinates	48°47′0″N 22°02′12″E / 48.78333°N 22.03667°E / 48.78333; 22.03667
Type	reservoir
Primary inflows	Laborec
Primary outflows	Laborec
Basin countries	Slovakia
Max. length	11 km (6.8 mi)
Max. width	3.5 km (2.2 mi)
Surface area	33 km2 (13 sq mi)
Average depth	9.5 m (31 ft)
Max. depth	14 m (46 ft)
Water volume	334 million cubic metres (271,000 acre⋅ft)
Settlements	Hôrka, Medvedia hora, Kamenec, Paľkov, Biela hora

Zemplínska šírava (sometimes called the "Slovak sea" (Slovak: Slovenské more, Hungarian: Széles-tó). is a reservoir in eastern Slovakia, near the town of Michalovce, wholly belonging to the Michalovce District. The name recalls the historical Zemplín region. The dam was built in 1961–1965, covers an area of 33 km² (13 sq mi), has an average depth of 9.5 m (31 ft), with a maximum depth of 14 m (46 ft). Water from the dam flows into the Laborec river, which in turn flows into the Bodrog river. The area is primarily used for recreation. It also supplies cooling water for the Vojany Power Station.

Panorama of Zemplínska šírava and Vihorlat Mountains (Vihorlatské vrchy)

• Zemplinska sirava (in Slovak)