Osei Kyei Mensah Bonsu (previously known as Lawrence Addae[1] and born on February 3, 1957)[2][3] is a Ghanaian urban planner and politician.

He was the majority leader in the Ghanaian Parliament until he stepped down on 21 February 2024[4] and is the Minister for Parliamentary Affairs in Ghana.

He first became a member of the Parliament in January 1997, representing the people of Old Tafo, in the Suame Constituency of the Ashanti Region.

[9][12] He criticized the Speaker of the Ghanaian Parliament, Alban Bagbin, for suspending parliamentary proceedings to attend the 2023 National Development Conference hosted by the Church of Pentecost.

[16][17][18] The Suame member of parliament, Osei Kyei-Mensah-Bonsu, in February 2024 formally announced his retirement from his position as majority leader.

He was elected over Alidu Baba Dambasea of the National Democratic Congress, Solomon Nkrumah Appia Kubi of the Progressive People's Party, Adam Mohammed of the People's National Convention, Frederick Antwi-Nsiah of the Convention People's Party, Mavis Afriyie of the Democratic People's Party, Abena Nyarko of the National Democratic Party, Osei-Bempah Hayford and Paul Richard Kofi Yeboah both independent candidates.

Osei Kyei Mensah Bonsu contested with four other candidates, which include Dodoovi Francis of the National Democratic Congress, Sulemana Mohammed of the Convention People's Party, Mohammed Mubarak of the All People Congress and the Independent candidate.

[31] Osei Kyei-Mensah-Bonsu was elected by the Executive Committee of the Commonwealth Parliamentary Association (CPA) as its new acting Vice-Chairperson.

[32][33][34] Osei Kyei-Mensah-Bonsu assumed the position after winning an election in which he competed against Garry Brownlee from New Zealand[35][36] Prior to the completion of the Parliament's Job 600 building, Mensah Bonsu proposed the renaming of the main Job 600 building.

He also proposed that one of the two new blocks built behind the main Job 600 be named after Peter Ala Adjetey, who succeeded Justice Annan.

Opposition to these naming issues was led by members of the Convention People's Party, who believed renaming Job 600 would erase the contributions of Kwame Nkrumah from Ghanaian history.