| | | | |
| Wakhidin | PT. Indonesia Power Priok POMU | Indonesia | • MLA I |
| Suwoko | PT PJB UP Muara Tawar | Indonesia | • MLA I |
| Narendran | Unknown | India | • MLA II |
| Darmawan | PT. Pembangkitan Jawa Bali (PJB) | Indonesia | • MLA I |
| Nabila | PT Pertamina | Indonesia | • MLA I |
| Wellington Alves Silva | VALE | Brazil | • MLA I • MLT I |
| Mohamed Abd El-Rady Awad | RITEC - The Condition Monitoring Company | Egypt | • MLA I |
| Julio Cesar da Costa Andrade | Gerdau | Brazil | • MLT I |
| Antonio Manoel da Silva Neto | Copebras | Brazil | • MLT I |
| Cristovao Junio da Silva | VALE | Brazil | • MLT I |
| Jhonny Modesto Lopez Mavila | Confipetrol Andinas S.A. | Peru | • MLA I |
| Junior das Gracas Pereira | VALE | Brazil | • MLA I • MLT I • MLT II |
| Sharizan Bin Ramli | Malaysian Refining Company SDN BHD | Malaysia | • MLA I |
| Aurelio Ivanovich Ruiz Chaponan | Spartan Distributors Srl | Peru | • MLT I |
| Khairil Izuan Ahmad Tarmidzi | SVTT Resources Sdn Bhd | Malaysia | • MLA II |
| Rahul Vashisht | Indian Oil Corporation Ltd | India | • MLA I • MLA II |
| Vibhor . | Tata Steel | India | • MLA II • MLA III |
| Aliff Shaffiq A Aziz | Malaysian Refining Company SDN BHD | Malaysia | • MLA II |
| M Khairul Rijal A Rahman | Malaysian Refining Company SDN BHD | Malaysia | • MLA II |
| Suwew A/P Thavil | Metalux Oil Analysis Sdn Bhd | Singapore | • MLA I |
| Viggo Aanonsen | MHWirth | Norway | • MLA I |
| Lars Aasen-Stranden | Invicta | Norway | • MLA I |
| Rodney lee Aastrom | Basin Electric Power Cooperative | USA | • MLA I • MLA II |
| Md Aatif | Maersk Oil Trading Lubricants | India | • MLA II • MLA III • MLT I • MLT II • MLE |
| Mohd Khairi Asyraf Ab Hamid | Bumi Armada Berhad | Malaysia | • MLA II |
| Muhammad Raqim Bin Ab Rahman | Pengerang Refining | Malaysia | • MLA I |
| Ahmad Faizal Bin Ab Talib | Yinson Lavender Operations Sdn Bhd | Malaysia | • MLA I |
| Percy Daniel Abanto Medina | COGA | Peru | • MLT I |
| Amr Hassan Abayazeed | Egyptian Petrochemicals Company | Egypt | • MLA I |
| Feras Abbas | Unknown | Saudi Arabia | • MLA I |
| Waseem Abbas | QAFCO - Qatar Fertilizer Co | Qatar | • MLT I |
| Yousif Abbas | Bahrain Petroleum Company; BAPCO | Kingdom of Bahrain | • MLA I |
| Saleem Abbas | United Energy | Pakistan | • MLA I |
| Adnan Abbas Abdullah | Kuwait Oil Company | Kuwait | • MLA I |
| Elamin Abbashar | Afton Chemical Corporation | U.A.E. | • MLA II • MLT I |
| Thomas Abbate | RelaDyne | USA | • MLT I |
| Jared Abbot | Rio Tinto | Australia | • MLA I |
| Earl Abbott | MartinFederal Consulting, LLC | USA | • LLA II |
| Billy Abbott | Georgia Pacific | USA | • MLT I |
| Abdalla Abd El Monteleb Abd El Lateef | Cooperative Petroleum Company (CPC) | Egypt | • MLA II |
| Mohamed Atta Abd El-lattif | Cooperative Petroleum Company (CPC) | Egypt | • MLA II |
| Ahmed Adel Abd Elmoniem | Ezzsteel | Egypt | • MLA I |
| Omar Mohamed Abd Elsalam Aziz | Petromaint | Egypt | • MLA I |
| Elifazlin Binti Abd Fattah | Malaysian Refining Company SDN BHD | Malaysia | • MLA II |
| Ahmad Sofian Bin Abd Ghani | Enhanced Performance Solutions | Malaysia | • MLA I • MLA II • MLA III |
| Nurhazwani Shahirah Bt Abd Jamil | PUSPEKA | Malaysia | • MLA II |
| Fatin Myra Bt Abd Manan | Metalux | Malaysia | • MLA II |
| Ahmad Lokman Abd Rahim | Malakoff Corporation | Malaysia | • MLA I |
| Mohamad Tirmizi Bin Abd Rahman | Kaneka | Malaysia | • MLA II • MLT I |
| Nydia Nathasha Binti Abd Razak | PUSPEKA | Malaysia | • MLA II |
| Mahmoud Abdallah Abou-khattab | Cooperative Petroleum Company (CPC) | Egypt | • MLA II |
| Mohamed Farrag Abdelalim Farrag | Enova by Veolia | U.A.E. | • MLA I |
| Mohamed Emad Abd-Elaziz | BAPETCO | Badr Petroleum Company | Egypt | • MLA I |
| Mohamed Ahmed Saber Abdelgawad | Rashid Petroleum Company | Egypt | • MLA I |
| Amr Mohamed Mahrous Abdelghani | Saudi Aramco | Saudi Arabia | • MLA I |
| Mostafa Mohamad Abdelhady | Petrobel | Egypt | • MLA I |
| Abdelhamid Mosaad Abdelhamid | Atlasco Egypt | Egypt | • MLA I |
| Mahmoud Yahia Abdelkader | EPROM | Egypt | • MLA I • MLA II |
| Mahmoud Abdellatif | Unknown | Egypt | • MLA I |
| Mahmoud Ahmed Badr Abdelmaksoud | Titan Cement | Egypt | • MLA I |
| Hesham Fathy Abd-Elnaby | Unknown | Egypt | • MLA I |
| Mohamed Gamal Abd-El-Sadek | Quality Oil for Lubricants and Petroleum Derivatives | Egypt | • MLA II |
| Mosab Abdelal Abden Mohamad | Oman Oil Marketing Company | Oman | • MLA I • MLA II • MLT I • MLT II |
| Mohd Nazim Shah Bin Abdol Rahman | Petronas Chemicals Methanol SDN BHD | Malaysia | • MLA I |
| Mahmoud Abdou | Methanex | Egypt | • MLA II |
| Mohamed Abdalfatah Abdrabouh | Unknown | Egypt | • MLA I |
| Abdul Muis Abdul Gani | Pengerang Refining | Malaysia | • MLA I |
| Hamsatun Abdul Ghani | Sadara Chemical Company | Saudi Arabia | • MLA II • MLA III • MLT I • MLT II • MLE |
| Mohd Harizarul Azlan Abdul Halim Lau | Malakoff Corporation | Malaysia | • MLA I |
| Mohammad Faris Al Hanis Abdul Hamid | Malaysian Refining Company SDN BHD | Malaysia | • MLA II |
| Jamal Bin Abdul Jalal | Malaysian Refining Company SDN BHD | Malaysia | • MLA I |
| Mohd Fauzy Bin Abdul Latif | Kinsajasa Sdn. Bhd. | Malaysia | • MLA II |
| Muhamad Hafiz Bin Abdul Manan | Malaysian Refining Company SDN BHD | Malaysia | • MLA II |
| Muhammad Abdul Nasir | Total Energies | U.A.E. | • MLA I |
| Mohammad Najib Abdul Rahim | Malaysian Refining Company SDN BHD | Malaysia | • MLA II |
| Muhammad Lutfi Bin Abdul Rahman | Petroknowledge SDN BHD | Malaysia | • MLA II |
| Khairul Hazwan Bin Abdul Rahman | PETRONAS Gas Berhad | Malaysia | • MLA II |
| Muhammad Rizam Bin Abdul Rahman | Malaysian Refining Company SDN BHD | Malaysia | • MLA I • MLA II |
| Zaty Hazwanie Binti Abdul Rais | Glide Technology SDN BHD | Malaysia | • MLA I |
| Mohammed Ali Abdul Razak | APSCO - Mobil | Saudi Arabia | • MLA I • MLA II • MLT I |
| Mohd Amirullah Abdul Razak | Malaysian Refining Company SDN BHD | Malaysia | • MLA II |
| Azhar Abdullah | Petronas Lubricants Marketing Sdn. Bhd. | Malaysia | • MLA II • MLA III • MLE • VIM |
| Mohd Nazri Abdullah | Kinsajasa Sdn. Bhd. | Malaysia | • MLA II |
| Ruslan Abdullayev | KAZ Minerals | Kazakhstan | • MLA I |
| Sylvie Abingeneye | Laurentide Controls Ltd. | Canada | • MLA I • MLT I |
| Nadiya Abitova | KAZ Minerals | Kazakhstan | • MLA I |
| Belal Ibrahim Aboelfetouh | John Crane | Egypt | • MLA I • MLA II |
| Kamal Ahmed Aboelkamal Ali | Petrobel | Egypt | • MLA I |
| Khalil Abouessabre | I Care Web | France | • MLA I • MLT I |
| Mohamed Elsayed Abouhashish | RITEC - The Condition Monitoring Company | Egypt | • MLA I |
| Amr Zakaria Khalifa Aboutaleb | Unknown | Egypt | • MLA I • MLA II |
| Jason Abrams | Georgia Pacific | USA | • MLA I |
| Ardak Absatov | KAZ Minerals | Kazakhstan | • MLA I |
| Ammar Abdullah Abuassonoon | Saudi Aramco | Saudi Arabia | • MLA I • MLA II • MLT I • MLT II • MLE |
| Mohammed Abubakr Abubakr Elrayes | Ezzsteel | Egypt | • MLA I |
| Fernando Acevedo | Pinnacle Foods Group | USA | • MLT I |
| Martin Acheampong | WearCheck Ghana | Ghana | • LLA II |
| Nnamdi Jude Achebe | Petrosave Integrated Services Ltd. | Nigeria | • MLA I • MLA II • MLA III • MLT I • MLT II • MLE |
| Alexa Dawn Ackermann | WTCC - Management Services (Waste Treatment Completion Company) | USA | • MLT I • MLT II • MLE |
| James Ackley | Shell | USA | • MLA II • MLT I • MLT II |