|Region||West of England|
|- right||Thunder Brook|
|- location||Broad Hinton, Wiltshire, England|
|- elevation||325 ft (99 m)|
|- location||Great Somerford, Wiltshire, England|
|- elevation||197 ft (60 m)|
|Length||8.7 mi (14 km), westerly|
|River system||Bristol Avon|
The Brinkworth Brook, is a tributary of the Bristol Avon. It rises near Broad Hinton in Wiltshire in the West Country of England, and flows in a north and then westerly direction, joining the Bristol Avon at Great Somerford.
The Brinkworth Brook rises at Broadtown, just north of Broad Hinton, near Wootton Bassett. It flows first in a northerly direction, and then just south of Wootton Bassett it is joined by minor tributaries from Westlea in Swindon and a reservoir at Tockenham Wick. The stream then passes under the M4 motorway and turns to the west past Brinkworth, joined on the right by the Thunder Brook near Dovey's Farm. At Somerford Bridge the Brinkworth Brook turns south and joins the Bristol Avon near Dauntsey House at Great Somerford.
The Brinkworth Brook is typical of Wiltshire's chalk streams, with gravelled beds. Floating water crowfoot Ranunculus, Desmoulin's whorl snail, the sedge Carex and the reeds Phragmitesand Glyceria maxima. In addition, "diverse fish assemblages, and [..] varied aquatic invertebrate fauna" are to be found.
- "Parishes - Brinkworth". British History Online. University of London & History of Parliament Trust. Retrieved 2010-01-02.
- Land Use Consultants (December 2005). "Ecological Character". Wiltshire Landscape Character Assessment. Wiltshire County Council. pp. 17–18. Retrieved 17 October 2010.
- Crabtree, B.; Moy, F., Whitehead, M., Roe, A. (2006). "Monitoring pollutants in highway runoff". Water and Environment Journal 20 (4): 287–294. doi:10.1111/j.1747-6593.2006.00033.x.