Zijldijk (Dutch pronunciation: [zɛilˈdɛik]; Gronings: Zieldiek [zilˈdik]) is a village in the municipality of Eemsdelta, Groningen, the Netherlands.

It is located along the N46 road between the city of Groningen and the Eemshaven seaport.

The village was first mentioned in 1424 as "Ubba Ffockema up den Zyldyck", and means sluice and dike.

In 1272, a sluice was built at the site in the newly poldered land around 't Zandt.

The Reformed Church was constructed in 1886, and nowadays serves as a care facility.