| Official Name: | Pathum Ratchawongsa |
| Native Name: | ปทุมราชวงศา |
| Native Name Lang: | th |
| Settlement Type: | District |
| Image Alt: | Children at Non Ngam village |
| Subdivision Type: | Country |
| Subdivision Name: | Thailand |
| Subdivision Type1: | Province |
| Subdivision Name1: | Amnat Charoen |
| Subdivision Type2: | Seat |
| Subdivision Name2: | Na Wa |
| Subdivision Type3: | Subdistrict |
| Subdivision Type4: | Muban |
| Established Title: | District established |
| Population Total: | 46100 |
| Population As Of: | 2005 |
| Blank Name Sec1: | Postal code |
| Blank Info Sec1: | 37110 |
| Blank Name Sec2: | Geocode |
| Blank Info Sec2: | 3703 |
| Timezone: | ICT |
| Utc Offset: | +7 |
| Coordinates: | 15.8922°N 104.9058°W |
Pathum Ratchawongsa (Thai: ปทุมราชวงศา, in Thai pronounced as /pā.tʰūm râːt.tɕʰā.wōŋ.sǎː/; ปทุมราชวงศา, in Lao pronounced as /pā.tʰu᷇m lâːt.sā.wo᷇ŋ.sǎː/) is a district (amphoe) in the eastern part of Amnat Charoen province, northeastern Thailand.
Neighboring districts are (from the south clockwise): Phana, Mueang Amnat Charoen, and Chanuman of Amnat Charoen Province; Khemarat, Kut Khaopun, and Trakan Phuet Phon of Ubon Ratchathani province.
The district was created on 2 July 1993, consisting of the three tambons, Kham Phon, Nong Kha, and Na Wa from Chanuman district, Lue and Huai from Phana district and Non Ngam from Mueang Amnat Charoen district.[1]
The district is divided into seven sub-districts (tambons), which are further subdivided into 73 villages (mubans). Na Wa Yai is a sub-district municipality (thesaban tambon) which covers parts of tambons Na Wa and Na Pa Saeng. There are a further seven tambon administrative organizations (TAO).
| No. | Name | Thai name | Villages | Pop. | ||
|---|---|---|---|---|---|---|
| 1. | Nong Kha | หนองข่า | 9 | 6,259 | ||
| 2. | Kham Phon | คำโพน | 10 | 7,255 | ||
| 3. | Na Wa | นาหว้า | 9 | 7,923 | ||
| 4. | Lue | ลือ | 14 | 8,211 | ||
| 5. | Huai | ห้วย | 13 | 6,996 | ||
| 6. | Non Ngam | โนนงาม | 8 | 3,608 | ||
| 7. | Na Pa Saeng | นาป่าแซง | 10 | 5,848 |