Social networks (SN) are becoming a common trend in almost every aspect of the world. Significantly, SN impacts students' studying in that they use it to support their assignments and tasks. However, in Vietnam and Can Tho, there is little research about the SN impact on students’ academic performance (SAP), so the authors decided to conduct this research. This project aims to research the impact of social networks on students’ academic performance (SAP) at the University of Greenwich Vietnam at Can Tho campus (UoG VN CT). A questionnaire gathered the data on the social network factors that impact students' academic performance. Variables identified are purpose, frequency of usage, SN sites (SNS), and SAP. The result shows a positive relationship between SNS usage and SAP, especially Facebook, the SNS that students use most, so UoG VN CT should take advantage of it to increase SAP. Otherwise, the research also demonstrates that the frequency of SN has a negative relationship with SAP: the more hours students spend on SN, the worse SAP students get, so UoG VN CT should give some policies to limit students’ SN time usage.