Siersthal (French pronunciation: [siʁstal]; Lorraine Franconian: Siirschel) is a commune in the Moselle department of the Grand Est administrative region in north-eastern France.

The village belongs to the Pays de Bitche and to the Northern Vosges Regional Nature Park.

The area of Siersthal is 10.5 square kilometres (4.1 sq mi), population density is 63.1 inhabitants per square kilometre (163/sq mi).

The map below shows the location of Siersthal with key infrastructure and adjacent municipalities.

This Arrondissement of Sarreguemines geographical article is a stub.