Stephen John Rayden Patterson (born 4 January 1971) is a former Australian politician and Australian rules footballer who played with Collingwood in the Australian Football League (AFL), and Norwood in the South Australian National Football League (SANFL).
He was the Liberal member for electoral district of Morphett in South Australian House of Assembly from 2018 until his defeat at the 2026 election. During his time in parliament Patterson served as the Minister for Trade and Investment in the Second Marshall ministry between July 2020 and March 2022 and was the Shadow Minister for Energy and Net Zero, Shadow Minister for Mining and Shadow Minister for Defence and Space Industries in the Speirs shadow ministry.
Patterson grew up in the Adelaide suburb of Highbury. He attended Pembroke School, Adelaide, and then went on to study a Bachelor of Science (Physics) and Bachelor of Electrical & Electronic Engineering with 1st Class Honours at the University of Adelaide.
Originally from South Australian National Football League (SANFL) club Norwood, Patterson was used mostly as a rover at Collingwood. He also played at half forward or as a wingman on occasions and kicked 25 goals in 1996. Patterson gathered three Brownlow Medal votes from Collingwood's win over North Melbourne in the final home and away match of the 1997 season. The following year, in Anzac Day match against Essendon, Patterson was voted Best on Ground after 24 disposals. His performances in the 1998 season saw him finish the year third in Collingwood's Copeland Trophy voting.
He was the first player to kick a goal against Port Adelaide.
Patterson was elected as a Councillor for the City of Holdfast Bay in November 2010, and went on to become Deputy Mayor during his term. He became Mayor in November 2014, defeating incumbent Ken Rollond.
In April 2017, he defeated the sitting member, Duncan McFetridge, in Liberal Party preselection for the electoral district of Morphett at the 2018 state election, and was subsequently elected. While he only won 41 percent of the primary vote, McFetridge's preferences flowed overwhelmingly to him, allowing him to easily reclaim the seat for the Liberals.
Patterson has previously served as the Presiding Member of the South Australian House of Assembly Environment, Resources and Development Committee, and the Parliamentary Committee on Occupational Safety, Rehabilitation and Compensation. He has also previously served as a Member of the Economics and Finance Committee, the Public Works Committee, and the Joint Committee on Valuation Policies and Charges on Retirement Villages.
On 29 July 2020, Patterson was appointed as Minister for Trade and Investment, replacing David Ridgway in a cabinet reshuffle.
On 21 April 2022, Patterson was appointed as the Shadow Minister for Energy and Net Zero, Shadow Minister for Mining and Shadow Minister for Defence and Space Industries.
Patterson was defeated at the 2026 state election by Labor candidate Toby Priest.
Patterson is married and has four children, including Collingwood AFLW player Violet Patterson. Patterson is an active member of the Glenelg Surf Life Saving Club, undertaking regular patrols along Adelaide's coastline.