The Tasmanian Gas Network (TGN) is a distribution network operating across Tasmania. The distribution network is owned and operated by Tas Gas Networks Pty Ltd (TGN Pty Ltd). TGN Pty Ltd is a wholly owned subsidiary of Infrastructure Capital Group (ICG) since 2019.

The TGN is 837 km in length and delivers approximately 3.54 PJ per annum of natural gas to approximately 46 500 customers. The network delivers gas from the Tasmanian Gas Pipeline (TGP) to Hobart, Launceston, Devonport, Burnie, Wynyard, Longford, Bell Bay and more recently to Ulverstone.

The TGN is currently a non-scheme network, and is subject to the access regime for non-scheme pipelines under Part 10 of the National Gas Rules (NGR). It was previously subject to the access regime for non-scheme pipelines under the former Part 23 of the NGR, which was replaced by Part 10.

On 13 December 2017 and 30 November 2022, the AER granted a five year Category 3 exemption under Part 23 of the NGR for the TGN.

In 2003, following a competitive tender process, the Tasmanian state government entered into two development agreements with Powerco for the construction and operation of the gas distribution network. The TGN was constructed in two stages. In 2003, following a competitive tender process, the Tasmanian state government entered into two development agreements with Powerco for the construction and operation of the gas distribution network. The TGN was constructed in two stages. The first stage was completed in 2005 with 100 km of pipeline laid in the urban areas of Hobart, Launceston, Devonport, Longford, Westbury, Wynyard and Bell Bay. The second stage involved laying a further 612 km of pipeline across Hobart, Launceston, Burnie and Devonport and was completed in 2007. Brookfield Infrastructure acquired the TGN from Powerco Ltd in 2009.