Łęczyca County (Polish: powiat łęczycki) is a unit of territorial administration and local government (powiat) in Łódź Voivodeship, central Poland.

It came into being on January 1, 1999, as a result of the Polish local government reforms in 1998.

Its administrative seat and only town is Łęczyca, which lies 35 kilometres (22 mi) north-west of the regional capital Łódź.

The county covers an area of 774 square kilometres (298.8 sq mi).

The county is subdivided into eight gminas (one urban and seven rural).