| Official Name: | Laem Sing |
| Native Name: | แหลมสิงห์ |
| Native Name Lang: | th |
| Settlement Type: | District |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chanthaburi |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Pak Nam Laem Sing |
| Subdivision Type3: | Tambon |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 30790 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 22130 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 2206 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 12.4817°N 102.0736°W |
Laem Sing (Thai: แหลมสิงห์, in Thai pronounced as /lɛ̌ːm sǐŋ/) is a district (amphoe) of Chanthaburi province, eastern Thailand.
Laem Sing district was created in 1898, then named Phlio District. In 1909 the government allocated budget for the new district office, and they changed the district name to Laem Sing.[1] The district office was re-built in 1966 and 1996.
Neighboring districts are (from the northwest clockwise) Tha Mai, Mueang Chanthaburi, and Khlung of Chanthaburi Province. To the southwest is the Gulf of 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). There are two townships (thesaban tambons): Pak Nam Laem Sing covers the same-named tambon, and Phlio covers tambon Phlio and Khlong Nam Khem. There are a further five tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Pak Nam Laem Sing | ปากน้ำแหลมสิงห์ | 16 | 9,220 | ||
| 2. | Ko Proet | เกาะเปริด | 7 | 3,419 | ||
| 3. | Nong Chim | หนองชิ่ม | 10 | 5,314 | ||
| 4. | Phlio | พลิ้ว | 12 | 5,226 | ||
| 5. | Khlong Nam Khem | คลองน้ำเค็ม | 6 | 1,555 | ||
| 6. | Bang Sa Kao | บางสระเก้า | 5 | 2,230 | ||
| 7. | Bang Kachai | บางกะไชย | 9 | 3,826 |