Sirník (Hungarian: Szürnyeg) is a village and municipality in the Trebišov District in the Košice Region of south-eastern Slovakia.

In historical records the village was first mentioned in 1403.

The village lies at an altitude of 128 metres and covers an area of 5.822 km².

The village is about 71% Slovak, 25% Hungarian and 4% Gypsy.

This article relating to the geography of the Trebišov District is a stub.