Anelosimus pratchetti is a species of tangle-web spider found in New South Wales, Australia.

[1] The total length of the spider is approximately 2.4 to 3.6 millimetres (0.094 to 0.142 in), with females slightly larger than the males.

The female can be distinguished from others in the genus by the shape of the copulatory ducts and a unique triangular epigynal plate.

[1] The holotype specimen was collected from Berowra Valley Regional Park, at an elevation of approximately 100 metres (330 ft).

[1] The species uniqueness and placement in the genus has been confirmed by analysis of nuclear and mitochondrial DNA.