The University of Cambodia has affiliations with multiple institutions around the globe, including the following:

2005

• Bansomdejchaopraya Rajabhat University, Thailand (April, 2005)

2006

• Kyung Hee University, Republic of Korea (2006)
• Ohio University, USA (2006)
• United Nations Sustainable Development Solutions Network (2006)

2008

• Unigen Corp., USA (2008)

2009

• European Commission (May, 2009)
• Kalinga Institute of Industrial Technology, India (May, 2009)
• Payap University, Thailand (November, 2009)

2010

• University of Jenderal Achmad Yani, Indonesia (March, 2010)
• University of Houston, USA (April, 2010)
• People Health Development (PHD) Association (June, 2010)
• Dongseo University, Republic of Korea (December, 2010)
• Galilee International Management Institute (GMI), Israel (December, 2010)
• Inha University, Republic of Korea (2010)

2011

• Tsinghua University School of Continuing Education, People's Republic of China (November, 2011)
• Chosun University, Republic of Korea (December, 2011)
• People Health Development (PHD) Association (2011)
• Tulane University Freeman School of Business, USA (2011)

2012

• Berjaya University College of Hospitality (September, 2012)
• Khmer Brewery Limited (2012)

2013

• Ohio University, USA (April, 2013)
• Universiti Putra Malaysia, Malaysia (August, 2013)
• Guangxi University of Foreign Languages, People's Republic of China (September, 2013)
• Taiji Computer Corporated Limited (November, 2013)
• People Health Development (PHD) Association (2013)

2014

• Woosong University, Republic of Korea (July, 2014)
• Universiti Putra Malaysia, Malaysia (2014)

2015

• Guilin University of Technology, People's Republic of China (January, 2015)
• Maybank (Cambodia) PLC (May, 2015)
• Cambodian Private University Alliance: Asia Europe University, Human Resource University, International University, and Vanda Institute (August, 2015)
• Human Rights Resource Center (HRRC), Indonesia (October, 2015)

2016

• Clinic and Maternity Bun That (January, 2016)
• Amity University Uttar Pradesh, India (March, 2016)
• Kumoh National Institute of Technology, Republic of Korea (March, 2016)
• Guizhou Medical University (April, 2016)
• Cambodian Higher Education Association (July, 2016)
• Faculty of Home-Economics Technology, Rajamangala University of Technology, Thailand (July, 2016)
• Guangxi University for Nationalities, People's Republic of China (July 2016)
• World Economic Forum (July, 2016)
• Oversea Students Communication Association of Yangjiang, China (August 2016)
• Mae Fah Luang University, Thailand (September 2016)
• President University, Indonesia (September, 2016)
• Association of Southeast Asian Institutions of Higher Learning (ASAIHL) (December, 2016)
• Worldwide Support for Development (WSD) Handa Center, Stanford University, USA (December, 2016)

2017

• European Union Support to Higher Education in the ASEAN Region (EU-SHARE) (January, 2017)
• Guangxi University for Nationalities, China (January, 2017)
• Inha University, Republic of Korea (January, 2017)
• Migration Research and Training Center of the International Organization for Migration, Republic of Korea (March, 2017)
• Guizhou Minzu University (June, 2017)
• Qiannan Normal University for Nationalities (July, 2017)
• Association of Universities of Asia and the Pacific (August, 2017)
• Royal University of Fine Arts (August, 2017)
• Southeast Asia Television (August, 2017)
• Kalinga Institute of Social Sciences, India (September, 2017)
• Angeles University Foundation, Philippines (November, 2017)
• Daffodil International University, Bangladesh (November, 2017)
• Hunan University of Humanities, Science and Technology, China (November, 2017)
• Lyceum of the Philippines University- Batangas, Philippines (November, 2017)
• Sias International University, China (November, 2017)
• University of Asia Pacific, Bangladesh (November, 2017)
• Xi’an International University, China (November, 2017)
• Zhengzhou University, China (November, 2017)
• AIP Foundation Safe Roads for Life (December, 2017)

2018

• Luther Varsity in Souther Africa (January, 2018)
• Shanghai Ocean University, China (January, 2018)
• Yeoju Institute of Technology, Republic of Korea (February, 2018)
• Chinese Institute of International Education (CIIE), Hong Kong, China (March, 2018)
• Cambodian-German Cultural Association (June, 2018)
• Global Technology University, United States of America (July, 2018)