Andrew William Hastie (born 30 September 1982) is an Australian politician and former military officer who has served as the deputy leader of the Opposition and the deputy leader of the Liberal Party in the House of Representatives since 2026. He has been the member of parliament (MP) for the Western Australian division of Canning since 2015.

Born in Wangaratta, Victoria, Hastie graduated from the University of New South Wales in 2004 with a bachelor's degree in history, politics, and philosophy. He completed officer training at the Royal Military College, Duntroon, in 2006, before being deployed to the war in Afghanistan and serving as a troop commander in the Special Air Service Regiment (SASR). Hastie was first elected to the House of Representatives at the 2015 Canning by-election.

Hastie served as the Assistant Minister for Defence from 2020 to 2022, during the Morrison government. Following the 2022 election, he served as Shadow Minister for Defence, as well as Shadow Minister for Defence Industry & Defence Personnel in the Dutton shadow ministry. He was the Chair of the Parliamentary Joint Committee on Intelligence and Security from 2017 to 2020.

Hastie was appointed Shadow Minister for Home Affairs in May 2025. He retired from the role in October 2025 after resigning from the party's frontbench over internal policy disputes. He returned to the frontbench in February 2026, serving as the Shadow Minister for Industry and Sovereign Capability. A prominent member of the National Right, his views have been described as right-wing populist and far-right, with strong stances against multiculturalism, immigration, abortion, LGBTQ rights, and net-zero emissions in Australia.

Hastie's mother, Sue, was a primary school teacher for special needs children. His maternal grandmother Rose was a nurse and cared for Hastie's maternal grandfather Reginald, a war veteran. His father Peter was a church pastor in Wangaratta, Victoria, and later in the inner Sydney suburb of Ashfield, where he helped launch Australia's first Mandarin-speaking Presbyterian church.

When the family moved to the inner west of Sydney, Hastie began his primary education at Ashbury Public School. From year 5, he attended The Scots College in Sydney, completing his Higher School Certificate in 2000. Intending to become a journalist, Hastie began a Bachelor of Arts in History, Politics and Philosophy at the Kensington Campus of University of New South Wales in 2001, and also joined the University of New South Wales Regiment as a part-time reservist.

Hastie completed his second year at UNSW's Kensington Campus in 2002 before transferring to the Australian Defence Force Academy in Canberra in 2003. He finished his bachelor's degree in 2004, then his honours year in 2005, where his final thesis examined Charles Bean's official history of Australia in World War I. Hastie went on to officer training at Royal Military College, Duntroon in 2006, where he met his political mentor John Anderson. In 2007, Hastie completed the George Washington University Elliott School of International Affairs U.S. Foreign Policy Summer Program in Washington, D.C. Hastie has also completed a Graduate Certificate in Business Economics through Harvard Extension School.

Hastie began his military career as an officer cadet in 2001. His officer training was completed at Duntroon in 2006, and he was commissioned as a lieutenant from December. He was posted in 2007 with the 2nd Cavalry Regiment (Australia) of the Royal Australian Armoured Corps, based in Palmerston, Northern Territory. Hastie commanded a cavalry troop in 2008, before it was deployed in Afghanistan the following year. Hastie was deployed to Afghanistan with Mentoring and Reconstruction Task Force Two where he commanded a troop of Australian Light Armoured Vehicles. The troop's armoured operations began at the start of the fighting season in May 2009, concluding in February 2010.