Kwadwo Nimfour Opoku Onyinah (born July 22, 1954) is a Ghanaian theologian , a minister and televangelist , who chairs a renowned
Pentecostal church, the Church of Pentecost in Ghana . He is a holder of a Doctor of Philosophy in Theological Studies from the University of Birmingham (2002) and a Master of Theology in Applied Theology at Regents Theological College. He joined the ministry of The Church of Pentecost in 1976 and has served in various positions including Rector of Pentecost University College, Executive Council Member, International Missions Director, and an Adjunct Lecturer at the Pentecost Bible Training Centre (now Pentecost Theological Seminary).
Early life and education
Rev. Opoku Onyinah was born to Opanin Kwame Onyinah and Maame Rebecca Akosua Addai of Aduman about 7:00 am in a local maternity home in the town. As per Akan tradition,  he was named after his grand-uncle, a popular chief of Dwumakyi village called Opanin Nimfour. He grew up with the name “Koofour” an abridged form of Kwadwo Nimfour.
22 July was adopted as his official birthday though his Catholic Baptism Certificate bears 24 July as his birthday.  He started his basic education at Yamfo Presbyterian Primary School and completed Middle Form Four at Yamfo Catholic Middle School.  He was trained in Carpentry and joinery in Sunyani Technical and Tamale Technical Institutes. His calling into pastoral ministry in 1976 enable him to acquire a master of theology in Applied theology in 1998 and Philosophy in Theological Studies from University of Birmingham in 2002 
Opoku Onyinah’s rich academic contribution to theology in Africa has won him prestigious laurels. He was promoted as an Associate Professor in 2016. In response this promotion, a citation in honour written by the current general secretary of the Church of Pentecost, Rev. Nana Yaw Kumi Larbi states: “It is with great honor and pleasure that we officially announce the promotion of the Chairman of The Church of Pentecost, Apostle Dr. Opoku Onyinah, to the academic rank of an Associate Professor.” – By Aps. Alexander N. Y. A.Kumi-Larbi” 
Employment and Full Time Ministry
Apostle Prof. Opoku Onyinah was employed by the State Construction Company as a Regional Estimator before his ultimately call into the full-time ministry of The Church of Pentecost in 1976.
His first ministerial station was a District Overseer to Wa District from 1976-1981 in the Northern Region. Then transferred to Kumasi as District Pastor from 1981-1984, He served as Volta Regional Head from 1984-1986, he left Ghana to London-UK for further studies from 1986-1988. His return to Ghana saw him appointed as the Koforidua Regional Head from 1988-1991, he became the first International Missions Director (IMD) for the church from 1991-1996, he continued theological studies at London-UK from 1996-2002,  he was appointed principal to Pentecost Bible College which subsequently upgraded to Pentecost University College as its first Rector from 2002-2008  and finally as Chairman of The Church of Pentecost -Worldwide from 2008 to Date.
Apostle Opoku Onyinah was elected as the chairman of the church of Pentecost in the year 2008.  He succeeded Apostle Michael Ntumy through election. He won 2/3 of the total vote cast.  The chairmanship comes along with critical responsibilities. As a chairman, Apostle Onyinah performs the following functions;
He chairs the Executive Council and the General Council meetings.
He is an ex-officio member of every Board and Committee of The Church.
He chairs every meeting, convention or rally he attends.
He directs action on issues and correspondence pertaining to Missionaries and External Branches
He is the Chairman of the Missions Board
He assigns to the General Secretary and the International Missions Director such duties as he deems necessary.
He is responsible for appointing an Acting General Secretary or International Missions Director from among the Executive Council members, or Apostles and Prophets during the short absence of the General Secretary or the International Missions Director not exceeding six (6) months.
He takes decisions and actions with any Area Head where disciplinary or other action is urgently required in an Area and afterwards reports to the Executive Council
He organizes retreats, seminars, and prayer sessions for National/Area Heads and Ministers.
He issues pastoral and circular letters as and when he deems necessary
He confers with the General Secretary and the International Missions Director on matters concerning Government and outside bodies
He gives a formal address on the state of The Church at every General Council meeting”
He was re-elected in the 40th General Council Meeting held at the Pentecost Convention Centre (PCC) at Gomoa Fetteh in the Central region. He obtained 77.3% of vote cast at the council meeting which enabled him a five-year leadership mandate. 
Prof. Opoku Onyinah also chairs the Ghana Pentecostal and Charismatic Council. He is deputized by Sam Korankye Ankrah .  He is a member of the National Peace Council along with Prof. Emmanuel Asante and Bishop James Saah.  [ better source needed ]
He claims to have faced some challenges in his ministry. Significant among them is a review  of church culture concerning head covering and wearing of trousers by females in church services. This review was made by the church’s college of Apostles, Prophets and evangelists in January 2010 and subsequently issued a communique to inform church members about the review. The review was not accepted by some of the members and the general public which resulted in strong criticism against leadership.
Mr. Gibson Annor – Antwi the co-author of the Bio-autobiography of Prof. Opoku Onyinah believes that, one of the strength of the apostle is his ability to handle difficult issues with absolute cordiality. He wrote that before the review of the said practices, the then General Secretary of the church Apostle Dr. Alfred Koduah was tasked to conduct an in-dept analysis of the issue. Apostle Alfred Koduah in an interview conducted by Mr. Gibson Annor – Antwi said, “When on Tuesday 19 January 2010, I finished and presented the paper, it received a standing ovation”
Another member of the college by name Apostle Peter Ayerakwah proposed that a communique should be written to all assemblies hence, the 46-page document of F. Koduah was collapsed into two pages for circulation.
The communique was rejected by some members of the church, especially some elders from Beposo to Agona Ahanta in the Western Region as published in the Daily Guide Newspaper by Sam Mark Essien, Takoradi on 19 February 2010.  Aftermath of this publication, was a strong agitation by members and officers who called the house of Prof. Opoku Onyinah with threats and anger.
According to Annor – Antwi subsequently, Opoku Onyinah led leadership and in spirit of love and explained the issues which eventually restored peaceful atmosphere in the church.
Academic Publications and Books
Rev. Opoku Onyinah is prolific writer with so many publications to his credits. Among them are the listed few
Onyinah Opoku “Principalities and Powers” in Wonsuk Ma, Veli-Matti Karkainen and J. Kwabena Asamoah Gyadu(eds) Pentecost Mission and Global Christianity. Oxford: Regnum Books, 2014 pp 139–168
Healing: A Pentecostal perspective. One in Christ. Vol47.2. (2013),311-339
Understanding Worship. Accra: Pentecost Press Ltd. 2013 pp 245
Pentecostal and Exorcism. Blandford: Deo Publishing 2012 pp. 351
Spiritual Warfare. Cleveland: CTP Publishing LTD, 2012 pp196
Resting in the Lord. Accra: Pentecost Press Ltd, 2011, pp 137
The Leading of the Spirit. Accra: Pentecost Press Ltd, 2011, pp 153
No one may see God and live. Accra: Pentecost Press Ltd, 2010, pp 147
Emmanuel, God with us. Accra: Advocate Publishing Ltd. 2007 pp. 63
Pentecostals and Charismatics. Accra: Pentecost Press Ltd, 2006, pp 66
John’s Head. Advocate Publishing Ltd. 2006 pp. 69
Pressure of Success. Accra: Rock Publicity, 2004, pp 29
Are two persons the same?. How to overcome your weakness in temperament.Accra: Pentecost Press Ltd, 2004, pp 180
Note on the Seven letters in Revelation. Accra: Pentecost Press Ltd, 2003, pp 49