| | | | |
| Wakhidin | PT. Indonesia Power Priok POMU | Indonesia | • MLA I |
| Suwoko | PT PJB UP Muara Tawar | Indonesia | • MLA I |
| Vibhor | Tata Steel | India | • MLA III • MLA II |
| Teddy @ Erick Alfred | Petronas | Malaysia | • MLA I |
| Ahmad Syairazi A Rahman | Petronas | Malaysia | • MLA I |
| Muhammad Hairi Bin A. Hamid | Turcomp Engineering Services SDN BHD | Malaysia | • MLA II • MLA I |
| Narenthiran A/L Tharmareddy | Kellogg | Malaysia | • MLT I |
| Suwew A/P Thavil | Metalux Molecular (S) Pte Ltd | Singapore | • MLA I |
| Ron Christian Aala Aperocho | SLTEC South Luzon Thermal Energy Corporation | Philippines | • MLA II |
| Tan Aan Keng | Unknown | Malaysia | • MLA II • MLA I |
| Viggo Aanonsen | MHWirth | Norway | • MLA I |
| Mohammad Aatif | Baker Hughes | India | • MLA III • MLA II • MLT II • MLT I • MLE |
| Uthman Bin Ab Aziz | Regas Terminal Sg Udang | Malaysia | • MLA I |
| Mohd Khairi Asyraf Ab Hamid | Bumi Armada Berhad | Malaysia | • MLA II |
| Muhammad Faiz Bin Ab Malek | Malaysian Refining Company SDN BHD | Malaysia | • MLA II • MLA I |
| Muhamad Syafiq Bin Ab Rafar | PETRONAS Gas Berhad | Malaysia | • MLA I |
| Mohd Akmal Ab Rahim | Petronas | Malaysia | • MLA I |
| Muhammad Raqim Bin Ab Rahman | Pengerang Refining | Malaysia | • MLA II • MLA I |
| Ahmad Faizal Bin Ab Talib | Yinson Lavender Operations Sdn Bhd | Malaysia | • MLA I |
| Jose Gilbert Abagon | AP Renewables | Philippines | • MLA II |
| Abang Mohd Yazid Bin Abang Burhanuddin | Syarikat SESCO Berhad | Malaysia | • MLA I |
| Dayang Nor Ainin Sofiya Binti Abang Mortadza | Kinsajasa Sdn. Bhd. | Malaysia | • MLA I |
| Dayang Nur Syafiqah Binti Abang Mudin | Kinsajasa Sdn. Bhd. | Malaysia | • MLA I |
| Hayat Abbas | Pakarab Fertilizers Ltd. | Pakistan | • MLA I |
| Yousif Abbas | Bahrain Petroleum Company; BAPCO | Kingdom of Bahrain | • MLA I |
| Muhammad Tahir Abbas | Petro Rabigh | Saudi Arabia | • MLA II |
| Muhammad Noman Abbas | Unknown | Pakistan | • MLA II • MLA I • VIM • VPR |
| Elamin Abbashar | Afton Chemical Corporation | U.A.E. | • MLA II • MLT I |
| Michael Thomas Abbate | RelaDyne | USA | • MLT I |
| Thomas Abbate | RelaDyne | USA | • MLT I |
| Billy Abbott | Georgia Pacific | USA | • MLT I |
| Earl Abbott | RelaDyne | USA | • LLA II • MLT I |
| Abdalla Abd El Monteleb Abd El Lateef | Cooperative Petroleum Company (CPC) | Egypt | • MLA II |
| Mohamed Emad Abd EL-Aziz | BAPETCO | Badr Petroleum Company | Egypt | • MLA I |
| Mostafa Mohamed Abd El-Haleem | EPROM | Egypt | • MLA I |
| Mohamed Atta Abd El-lattif | Cooperative Petroleum Company (CPC) | Egypt | • MLA II |
| Ahmed Hussein Abd Elmoneam | Gastec | Egypt | • MLA I |
| Elifazlin Binti Abd Fattah | PETRONAS Gas Berhad | Malaysia | • MLA III • MLA II • MLT I |
| Muhammad Aslam B Abd Gafar | Colt Engineering Sdn Bhd | Malaysia | • MLA I |
| Nurhazwani Shahirah Binti Abd Jamil | PUSPEKA | Malaysia | • MLA III • MLA II |
| Siti Radhiah Binti Abd Kamal | Universiti Teknologi | Malaysia | • MLA I |
| Mohamad Khairolnizam Abd Karim | Pengerang Refining | Malaysia | • MLA I |
| Mohamad Khairil Izwan bin Abd Khalid | Vale Malaysia Minerals | Malaysia | • MLA II • MLT II • MLT I |
| Azrai Ariffin Bin Abd Malek | PETRON FUEL INTERNASIONAL SDN BHD | Malaysia | • MLT I |
| Syahril Rafieq Abd Manab | Petronas | Malaysia | • MLA II • MLA I |
| Muhammad Luthfi Muslim Bin Abd Razak | Tenaga Nasional Berhad | Malaysia | • MLA I |
| Nydia Nathasha Binti Abd Razak | PUSPEKA | Malaysia | • MLA II |
| Mohammed Iraqi Abdallah | Cooperative Petroleum Company (CPC) | Egypt | • MLA II |
| Mahmoud Abdallah Abou-khattab | Cooperative Petroleum Company (CPC) | Egypt | • MLA II |
| Sami Abdel Rahman Abdel Razeq Mdallal | Jordan Bromine Company (JBC) | Jordan | • MLT I |
| Abdel-Aty Abdallah Abdel-Aal | Khalda Petroleum Company | Egypt | • MLA I |
| Mohamed Farrag Abdelalim Farrag | Enova by Veolia | U.A.E. | • MLA I |
| Ahmed Fahmy Abdelaziz | Khalda Petroleum Company | Egypt | • MLA I |
| Sharaf Eldeen Abdelbagi Adam | Petrobash. M.A Co. Ltd, | Sudan | • MLA II • MLA I |
| Amr Mohamed Mahrous Abdelghani | Saudi Aramco | Saudi Arabia | • MLA I |
| Ehab Abdelghany Ibrahim Abdelghany | Gastec | Egypt | • MLA I |
| Hussein Galal Abdelhamid | Unknown | Egypt | • MLA I |
| Mahmoud Yahia Abdelkader | EPROM | Egypt | • MLA II • MLA I |
| Wael Saady AbdEllateef Salman | VibSolutions | Egypt | • MLA II |
| Khaled Ahmed Abdelmoniem | Khalda Petroleum Company | Egypt | • MLA I |
| Hassan Abdelsalam Abdelnabby | Zeina Group | Egypt | • MLA I |
| Hatem Atef Abdelhalim Abdelraouf | Khalda Petroleum Company | Egypt | • MLA I |
| Ahmed Mohamed Elsayed Abdo | Midor | Egypt | • MLA I |
| Mohd Nazim Shah Bin Abdol Rahman | Petronas Chemicals Methanol SDN BHD | Malaysia | • MLA I |
| Mohd Fadzli Abdollah | Universiti Teknikal Malaysia Melaka | Malaysia | • MLA II • MLA I |
| Mahmoud Abdou | Methanex | Egypt | • MLA II |
| Mohamed Abdalfatah Abdrabouh | Unknown | Egypt | • MLA II • MLA I |
| Amnan Azhan Abdul Aziz | Unknown | Malaysia | • MLA I |
| Abdul Muis Bin Abdul Gani | Pengerang Refining | Malaysia | • MLA II • MLA I |
| Che Zaki Abdul Ghafar | Petronas | Malaysia | • MLA I |
| Hamsatun Abdul Ghani | Sadara Chemical Company | Saudi Arabia | • MLA III • MLA II • MLT II • MLT I • MLE |
| Aminudin Bin Abdul Kadir | Bakun Hydro Power Generation Sdn Bhd | Malaysia | • MLA I |
| Mohamad Noor Salam Abdul Karim | Pengerang Refining | Malaysia | • MLA I |
| Khairul Ashraf Bin Abdul Latif | Port of Tanjung Pelepas | Malaysia | • MLA II |
| Muhammad Azlan Shah bin Abdul Latif | PrefChem | Malaysia | • MLA II • MLA I |
| Muhammad Syafiq Bin Abdul Majid | Regas Terminal Sg Udang | Malaysia | • MLA I |
| Mohamad Khairi Bin Abdul Muin | Kellogg | Malaysia | • MLT I |
| Amir Al-Hafiz Abdul Muner | Petronas | Malaysia | • MLA I |
| Muhammad Abdul Nasir | Total Energies | U.A.E. | • MLA I |
| Ahmad Izham Bin Abdul Rahman | Royal Malaysian Air Force | Malaysia | • MLA I |
| Mohd Kamarularifin Abdul Rahman | Pengerang Refining | Malaysia | • MLA II • MLA I |
| Khairul Hazwan bin Abdul Rahman | PETRONAS Gas Berhad | Malaysia | • MLA II |
| Zaty Hazwanie Binti Abdul Rais | Glide Technology SDN BHD | Malaysia | • MLA I |
| Mohd Annafi Bin Abdul Razak | Kinsajasa Sdn. Bhd. | Malaysia | • MLA I |
| Mohammed Ali Abdul Razak | Moove Lubricants | UK | • MLA II • MLA I • MLT I |
| Mohammad Abdulhaleem | Saudi Aramco | Saudi Arabia | • MLA I |
| Muhannad Abdulhamid Alhazmi | Saudi Aramco | Saudi Arabia | • MLA I |
| Mohd Azman Bin Abdullah | Universiti Teknikal Malaysia Melaka | Malaysia | • MLA III • MLA II • MLT II • MLT I |
| Azhar Abdullah | Petronas Lubricants Marketing Sdn. Bhd. | Malaysia | • MLA III • MLA II • MLE • VIM |
| Hilmi Abdullah | Malaysian Refining Company SDN BHD | Malaysia | • MLA I |
| Mohd Nazri Abdullah | Kinsajasa Sdn. Bhd. | Malaysia | • MLA II |
| Hamad Abdullah Almugarry | Saudi Aramco | Saudi Arabia | • MLA I |
| Saad Khalifah Abdullah AlOmar | Saudi Aramco | Saudi Arabia | • MLA I • MLT I |
| Ruslan Abdullayev | KAZ Minerals | Kazakhstan | • MLA I |
| Akram Mouazy Abed | Petronas | Iraq | • MLA I |
| Sylvie Abingeneye | Laurentide Controls Ltd. | Canada | • MLA I • MLT I |
| Nadiya Abitova | KAZ Minerals | Kazakhstan | • MLA I |
| Bow Abiyoso | PT Pertamina | Indonesia | • MLA I |
| Belal Ibrahim Aboelfetouh | TCI Sanmar Chemicals S.A.E | Egypt | • MLA II • MLA I |
| Moataz Mohamed Abouelhamd | Khalda Petroleum Company | Egypt | • MLA I |