The Westlime Lateral Pipeline is a pipeline owned and operated by APT Pipelines in south- western Western Australia.

The Westlime Lateral Pipeline interconnects with the Parmelia Gas Pipeline mainline and is a single shipper pipeline. The Westlime Lateral transports gas from the Dampier to Bunbury Pipeline to a lime plant near Dongara. The lateral was built in 1998. It has a nominal diameter of 100 mm, is 16km long and has a capacity of 8.6TJ/day (TBC). 

The Westlime Lateral Pipeline is a  non-scheme pipeline and is subject to the access regime for non-scheme pipelines under Chapter 6A of the NGL and Part 23 of the NGR. On 5 May 2018, the ERA granted a five-year Category 2 exemption under Part 23 of the NGR for the Westlime Lateral Pipeline. On 8 May 2023, the ERA granted a Category 2 and Category 3 exemption for the Westlime Lateral Pipeline under Part 23 of the NGR.