Aranyaprathet (Thai: อรัญประเทศ, pronounced [ʔā.rān.já.prā.tʰêːt]) is a district (amphoe) in Sa Kaeo province in Thailand. It borders Cambodia to the east and the busiest border crossing between Cambodia and Thailand is located in this district.

The largest town in the district is also called Aranyaprathet.

Aranyaprathet was originally a district in the Kabin Buri Province. On 1 April 1926 the province was abolished and the two districts Mueang Kabin Buri and Aranyapathet became districts of Prachinburi province. In 1993 it was one of the districts that formed the new Sa Kaeo province.

Until the Khmer Rouge disrupted neighbouring Cambodia in 1975, Aranyaprathet was a stop on the railroad connecting Bangkok with the Cambodian capital Phnom Penh. Aranyaprathet maintains its rail link with Bangkok but Poipet, the neighbouring Cambodian town, has still yet to see any rail activity since the Khmer Rouge destroyed the track.

Six kilometres southeast of Aranyaprathet town, at Ban Klong Luk (also spelled Ban Khlong Luek), is the busiest border crossing between Cambodia and Thailand. In addition to being on a major trade route, the border sees much tourist activity as it is on the road between Bangkok and Siem Reap, the town nearest Angkor Wat.

Aran, as the town is known in Thailand, has been affected by the growth of the gambling industry in Poipet. Despite gambling being illegal in both Thailand and Cambodia, the Cambodian government has granted concessions for casinos to be built at many of its land crossings. Cambodians are not permitted to gamble in the casinos. Poipet's proximity to Bangkok (3-5 hrs by road) has made it the most popular of these border casino areas. It now hosts seven casinos.

Aranyaprathet is divided into 13 sub-districts (tambons), which are further subdivided into 114 administrative villages (mubans).

No.	Name	Thai	Villages	Pop.
01.	Aranyaprathet	อรัญประเทศ	-	16,211
02.	Mueang Phai	เมืองไผ่	08	04,307
03.	Han Sai	หันทราย	10	05,644
04.	Khlong Nam Sai	คลองน้ำใส	12	05,432
05.	Tha Kham	ท่าข้าม	11	04,845
06.	Pa Rai	ป่าไร่	09	06,338
07.	Thap Phrik	ทับพริก	07	03,658
08.	Ban Mai Nong Sai	บ้านใหม่หนองไทร	08	09,634
09.	Phan Suek	ผ่านศึก	13	06,592
10.	Nong Sang	หนองสังข์	08	07,009
11.	Khlong Thap Chan	คลองทับจันทร์	10	04,713
12.	Fak Huai	ฟากห้วย	11	06,940
13.	Ban Dan	บ้านด่าน	07	04,780

Aranyaprathet District Stadium

Location	Aranyaprathet, Sa Kaeo, Thailand
Coordinates	13°41′46″N 102°30′36″E / 13.695975°N 102.509929°E / 13.695975; 102.509929
Surface	Grass
Tenants
Sa Kaeo F.C. 2010

Aranyaprathet District Stadium (Thai: สนามกีฬาอำเภออรัญประเทศ สวนกาญจนาภิเษก) is a multi-purpose stadium used mostly for football matches and was the home stadium of Sa Kaeo F.C.