Sülysáp is a village in Pest County, Hungary about 40 kilometres (25 mi) southeast of Budapest. In 1950 two villages, Tápiósáp and Tápiósüly, amalgamated, but they separated in 1954. In 1970 they combined again to form Sülysáp.

Sülysáp is in the Lower Tápió Valley of the Gödöllö hills. In this picturesque location, surrounded by beautiful low hills and good terrain, the Lower Tápió and Sápi streams add to making the village a beauty spot.

Primary route 31 serves the village by road.

Express and stopping trains of the Hungarian State Railways serve the village on suburban line 120a (Budapest–Újszász–Szolnok) at the main station (Sülysáp) and a smaller station halt (Szőlősnyaralö).

The nearest airport is the main international airport for the capital, Budapest-Ferihegy.

There are around 360 small and medium enterprises in the village, providing the livelihood of a large segment of the population.

After the collapse of the collective farming system, the lands around Sülysáp were privatized, and farmers became self-employed. The Agricultural Service Co-op was founded not long after, and currently leases almost half of the land from the owners, with a large number of members.