List of Old Haleians

• Sharafuddin Idris Shah – Sultan of Selangor, Malaysia
• Tunku Ismail Idris – Crown Prince of Johor

• Sir Colin Hannah – Governor of Queensland
• Sir Stephen Parker – Lieutenant Governor of Western Australia

• Kevin Cullen – doctor, winemaker^[1]
• George Winterton – Professor of Constitutional Law at the University of Sydney

• Sam Roberts-Smith – operatic baritone

• John Bennison – general manager of Wesfarmers
• Alexander Forrest – landowner and developer, explorer
• Andrew Forrest – Chairman and CEO of Fortescue; philanthropist (also attended Christ Church Grammar School)
• Richard Goyder – CEO of Wesfarmers and chairman of Australian Football League
• Lang Hancock – asbestos and iron ore magnate
• E. A. "Peter" Wright – mining magnate
• Melvin Poh – media entrepreneur

• Sir Stephen Parker – Chief Justice of Western Australia

• Robert Nicholson – Justice of the Federal Court of Australia and the Supreme Court of Western Australia

• Robert Drewe – author, journalist (winner, Walkley Award)
• Edward Fiennes-Clinton, 18th Earl of Lincoln – author^[2]
• Robert Juniper – painter
• Edward Russell – television presenter
• Meyne Wyatt – actor, Redfern Now
• Basil Zempilas – television presenter, Lord Mayor of Perth, Western Australian Liberal Party leader

• Ben Roberts-Smith – recipient of the Victoria Cross for Australia and Medal for Gallantry^[3]

• Sir Valston Hancock – Chief of the Air Staff, Royal Australian Air Force
• Sir Colin Hannah – Chief of the Air Staff, Royal Australian Air Force

• Paul Royle – pilot

• Richard Court, AC – Premier of Western Australia
• Hendy Cowan – Deputy Premier of Western Australia
• Peter Dowding – Premier of Western Australia (also attended Caulfield Grammar School and The Scots College)^[4]
• Sir John Forrest – first Premier of Western Australia
• Sir Walter Hartwell James – Premier of Western Australia
• George Leake – Premier of Western Australia
• Sir Ross McLarty – Premier of Western Australia

• Septimus Burt – Attorney-General, Western Australia
• Thomas Davy – Attorney-General, Minister for Education, Western Australia
• Sir Victor Garland – Minister in various portfolios, McMahon Ministry and Second and Third Fraser Ministries, Australia
• Bill Hassell – Minister in various portfolios, Court Ministry, Western Australia
• Christian Porter – Minister in various portfolios, Barnett Ministry, Western Australia

• Brian Greig – Australian Senator for Western Australia, Leader of the Australian Democrats
• Hugh Guthrie – Member of the Western Australian Legislative Assembly and Speaker of the Legislative Assembly
• Edward Bertram Johnston – Member of the Western Australian Legislative Council and Australian Senator for Western Australia
• Anthony Trethowan – Member of the Western Australian Legislative Assembly, clergyman
• Charles Wittenoom – Member of the Western Australian Legislative Council

• Sir Victor Garland – Australian High Commissioner to the United Kingdom
• Bill Hassell – Agent-General for Western Australia, London; Consul-General for Germany, Western Australia
• David Irvine – Australian High Commissioner to Papua New Guinea; Australian Ambassador to China and concurrently Ambassador to Mongolia and North Korea
• Sir Walter Hartwell James – Agent-General for Western Australia, London
• Sir Edward Wittenoom – Consul-General for France, Western Australia

• Dan Bull – Mayor of the City of Bayswater
• Peter Nattrass – Lord Mayor of the City of Perth
• Charles Veryard – Lord Mayor of the City of Perth
• Charles Wittenoom – Mayor of Albany Municipal Council
• Basil Zempilas – Lord Mayor of the City of Perth

Old Haleians playing in the Australian Football League include:

• Michael Gardiner – West Coast Eagles, St Kilda Saints, played in AFL Grand Final, 2009
• Kasey Green – West Coast Eagles, North Melbourne Kangaroos
• Brett Jones – West Coast Eagles
• Chad Jones – AFL player (West Coast Eagles, North Melbourne Kangaroos)
• Matthew Leuenberger – Brisbane Lions
• Paul Medhurst – Fremantle Dockers, Collingwood Magpies, Anzac Day Medal winner, 2008
• Cale Morton – Melbourne Demons, West Coast Eagles, Larke Medal winner, 2007
• Jarryd Morton – Hawthorn Hawks
• Mitchell Morton – West Coast Eagles, Richmond Tigers, Sydney Swans
• Jason Norrish – Melbourne Demons, Fremantle Dockers
• Tom Mitchell – Sydney Swans, Hawthorn Hawks, Brownlow Medal winner, 2018
• Nick Kommer – Essendon Bombers
• Michael Clark – Fremantle Dockers, Collingwood Magpies
• Michael Evans – Melbourne Demons
• Tom Barrass – West Coast Eagles
• Michael Aitken – Carlton Blues
• Digby Morrell – North Melbourne Kangaroos, Carlton Blues
• Adam Lange – North Melbourne Kangaroos
• Cameron Venables – Collingwood Magpies
• Clancy Rudeforth – West Coast Eagles
• Tim Gepp – Richmond Tigers, Western Bulldogs
• Mitch Georgiades – Port Adelaide Football Club
• Darcy Cameron – Collingwood Football Club
• Shane McAdam – Adelaide Football Club
• Kyron Hayden – North Melbourne Football Club
• Jy Farrar – Gold Coast Suns

• Geoff Marsh – international player (Australia) and coach (Australia, Zimbabwe, Pune Warriors India and Sri Lanka)
• Theo Doropoulos – state player (Western Australia, South Australia)
• Marcus Stoinis – state player (Western Australia)
• Michael Clark – state player (Western Australia)
• David Bandy – state player (Western Australia)
• Arthur Lodge – state player (Western Australia)

• Curtis Luck – US Amateur Golf Champion 2016

• Mark Hickman – international player (Australia), including at the Champions Trophy (1996, 1998, 2000, 2001, 2002, 2003), Commonwealth Games (1998 (gold medallist) and 2002 (gold medallist)) and World Hockey Cup (2002 (silver medallist))^[5]

• Mark Hickman – hockey (Australian team), Athens 2004 (gold medallist)^[5]
• Percy Oliver – swimming (Australian team), Berlin 1936
• Todd Pearson – swimming (Australian team), Sydney 2000 (gold medallist) and Athens 2004 (silver medallist)
• Deane Pieters – swimming (Australian team) Barcelona 1992
• Nick Porzig – rowing (Australian VIII), Sydney 2000 (silver medallist)
• Rolly Tasker – sailing (Australian team), Melbourne 1956 (silver medallist) and Rome/Naples 1960
• Sam McEntee – Athletics (Australian team), Rio de Janeiro 2016

• Dane Haylett-Petty
• Ross Haylett-Petty
• Luke Burton
• Ryan Hodson
• Justin Turner
• Nick Jooste
• Carlo Tizzano

• Rolly Tasker – international sailor; winner A-division, Fastnet race, 1979; line honours and winner IOR division, Parmelia Yacht Race
• John Longley – Project Manager and crewman of Australia II, winner of the 1983 America's Cup