The Association's supreme authority is the General Assembly, constituted by delegates to the annual Commonwealth Parliamentary Conference.

The office of Chairperson of the CPA Executive Committee is held by Ian Liddell-Grainger MP of the Parliament of the United Kingdom since August 2022.

Previous CPA Chairpersons have included: Emilia Monjowa Lifaka MP, Deputy Speaker of the National Assembly of Cameroon (2017-2021); Shirin Sharmin Chaudhury, Speaker of Jatiyo Sangsad Bhaban of Bangladesh (2014–2017),[3] who succeeded Sir Alan Haselhurst MP (2011–2014), formerly Chairman of Ways and Means of the UK Parliament.

Previous CWP Chairpersons include: Shandana Gulzar Khan, MNA from the National Assembly of Pakistan; Hon.

Since August 2022, the Chairperson for the CPA Small Branches is Joy Burch, MLA, Speaker of the Australian Capital Territory Legislative Assembly.

Previous CPA Small Branches Chairpersons include Niki Rattle, Speaker of the Parliament of the Cook Islands and Hon.

During his parliamentary career, he held several senior positions including chairing the International Development Select Committee, Minister for Schools and a range of Shadow Front Bench roles.

Previous Secretaries-General have been: Karimulla Akbar Khan, UK/Guyanese Lawyer (2016-2019); William F. Shija, former Minister Tanzania Parliament (2007–2014); Denis Marshall, former Minister New Zealand Parliament (2002–2006); Arthur Donahoe, former Speaker Nova Scotia House of Assembly (1993–2001); David Tonkin, former Premier South Australia (1986–1992); Sir Robin Vandervelt from South Africa (1961–1985); Sir Howard d’Egville (1949–1960).