Laem Sing (Thai: แหลมสิงห์, pronounced [lɛ̌ːm sǐŋ]) is a district (amphoe) of Chanthaburi province, eastern Thailand.

To the southeast of the district is the estuary of the Welu River.

It covers about 27 km2 of the shallow tidal water area, it contains extensive mudflats and mangrove forests.

The district is divided into seven sub-districts (tambons), which are further subdivided into 65 villages (mubans).

This Chanthaburi Province location article is a stub.