Diffusion of knowledge is a real significant factor for students also it is the most important role of universities. To diffuse knowledge, sharing is an important activity. This paper examines factors influencing knowledge sharing in higher education. Knowledge sharing is measured through knowledge transferring and knowledge reception. A quantitative survey was conducted with 517 undergraduate students in Vietnam. Statistical Package for the Social Sciences version 28.0 (SPSS 28.0) software was used to analyse data. The internal consistency reliability was tested by Cronbach's Alpha coefficient and the factor reduction was analyzed by exploratory factor analysis (EFA) model. The results of the study revealed that there is evidence of a positive relationship between factors including trust, knowledge self-efficacy, university support, lecturer support, physical environment, technology infrastructure, and ICT tool use and knowledge sharing. These findings are significant, as understanding these factors would help to stimulate knowledge sharing among students in higher education.