Sop Prap (Thai: สบปราบ, pronounced [sòp pràːp]; Northern Thai: ส๋บผาบ, pronounced [sǒp pʰàːp]) is a district (amphoe) in the southern part of Lampang province, northern Thailand.

The district was downgraded to a minor district (king amphoe) on 28 December 1917 and made a subordinate of Ko Kha district. It then consisted of the three tambons: Sop Prap, Samai, and Mae Kua. It was upgraded to a full district on 1 January 1953. Mr. Phayon Chanthanakhom was the first head officer of the district.

The name Sop Prap comes from the Prap River, which joins the Wang River in the district. It is also a name to commemorate the courage of the people in the area, who defeated Burmese invaders.

Neighboring districts are (from the south clockwise): Thoen, Soem Ngam, Ko Kha, Mae Tha of Lampang Province and Wang Chin of Phrae province.

The important water resources are the Wang and Prap Rivers.

The district is divided into four subdistricts (tambons), which are further subdivided into 35 villages (mubans). Sop Prap is a township (thesaban tambon) which covers parts of tambon Sop Prap. There are a further four tambon administrative organizations (TAO).

No.	Name	Thai name	Villages	Pop.
1.	Sop Prap	สบปราบ	12	10,949
2.	Samai	สมัย	8	7,584
3.	Mae Kua	แม่กัวะ	6	5,096
4.	Na Yang	นายาง	9	4,886

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