Stephan Karl Knoll (born 1982) () is an Australian politician who represented the South Australian House of Assembly electorate of Schubert for the South Australian Division of the Liberal Party of Australia from the 2014 state election until the 2022 election. Knoll served as the Minister for Transport, Infrastructure and Local Government and as the Minister for Planning in the Marshall Ministry between 22 March 2018 and 26 July 2020 and as the Leader of Government Business in the South Australian House of Assembly between 5 February 2020 and 26 July 2020. Background and early career Knoll attended Christian Brothers College, Adelaide, and University of Adelaide, completing a Bachelor of Commerce (Marketing). Prior to entering State Parliament he was the general manager of his family's small business Barossa Fine Foods. He is a former State President of the South Australian Young Liberal Movement. Parliamentary career After his election in 2014, Knoll was appointed to the Parliamentary Committee on Occupational Safety, Rehabilitation and Compensation. In January 2016, Knoll released a booklet entitled "40 Reasons Why You Can't Trust Labor with Your Money". Also in January, Knoll was promoted to Shadow Parliamentary Secretary for Waste, Deregulation, and IT use in government. In February 2016, Knoll was appointed to the Parliament's Economic and Finance Committee. In January 2017, fourteen months before the 2018 state election, Knoll was promoted to the shadow cabinet, taking on the portfolios of Police, Emergency Services, Corrections and Road Safety. Following the March 2018 election, he was appointed as the Minister for Transport, Infrastructure and Local Government and Minister for Planning. On 5 February 2020, Knoll was appointed as Leader of Government Business in the House. Knoll secured a record $1.1 billion for regional road projects and infrastructure upgrades across the state in the 2019-20 State Budget. This was the single biggest injection of new funding in a state budget for regional roads in South Australia's history. Knoll advocated and secured the construction of twin tunnels to complete the North-South Corridor as part of the 2020 State Budget, citing this as one of his achievements as minister - alongside local government and planning reform - when announcing his retirement from politics in December 2020. During his tenure as Planning Minister, Knoll navigated the rolling implementation of broader system changes including the introduction of a statewide electronic planning system - the first of its kind in Australia. Phase 1 of