Khun Han (Thai: ขุนหาญ, pronounced [kʰǔn hǎːn]) is a district (amphoe) in the southern part of Sisaket province, northeastern Thailand.

In 1958 the minor district Khun Han (then still spelled ขุนหาร) was upgraded to a full district.

The district is bounded in the south by the Dangrek Range. Neighboring districts are (from the west clockwise): Phu Sing, Khukhan, Phrai Bueng, Si Rattana, and Kantharalak of Sisaket Province, and Oddar Meancheay of Cambodia.

The district is divided into 12 sub-districts (tambons), which are further subdivided into 145 villages (mubans). Khun Han itself is a sub-district municipality (thesaban tambon) and covers parts of tambons Si and Non Sung. Other sub-district municipalities are Si, Krawan, Non Sung, Kanthrom, and Pho Krasang, each covering the same-named sub-district except those areas belonging to Khun Han municipality. The remaining seven sub-districts each have a tambon administrative organization (TAO).

No.	Name	Thai	Villages	Pop.
01.	Si	สิ	14	11,461
02.	Bak Dong	บักดอง	22	14,666
03.	Phran	พราน	20	15,716
04.	Pho Wong	โพธิ์วงศ์	08	06,192
05.	Phrai	ไพร	11	06,406
06.	Krawan	กระหวัน	12	08,701
07.	Khun Han	ขุนหาญ	09	05,813
08.	Non Sung	โนนสูง	09	07,791
09.	Kanthrom	กันทรอม	13	08,471
10.	Phu Fai	ภูฝ้าย	08	05,009
11.	Pho Krasang	โพธิ์กระสังข์	14	08,990
12.	Huai Chan	ห้วยจันทร์	05	04,799

• amphoe.com (Thai)