STKRJ Kampong Katok 'A', also known as STKRJ Kampong Tungku Area 3, is a public housing estate and designated village in Brunei-Muara District, Brunei.

It is located about 10 kilometres (6.2 mi) from the capital Bandar Seri Begawan.

[3] The village is located on the outskirts of Bandar Seri Begawan municipal area, and about 10 kilometres (6.2 mi) from its city centre.

The area overseen by him is starting from Simpang 355-21 type 'E' houses, which is 706 people, Simpang 355- 86 type 'D' houses, which is 534 people, while Simpang 355-101 house type 'C' recorded 492 people with a total of 1,732 people according to the 2014 census.

It also shares grounds with Katok 'A' Religious School, the government school for the country's Islamic religious primary education.