The current research aimed to discover the most frequently used reading strategies of EFL university students across their reading proficiency and personality types and examine the interaction between the predictive factors in using the strategies when reading English online texts. Data were collected using a questionnaire on reading strategies distributed to 141 students majoring in English Language Education at one of the universities in Indonesia to achieve the aims. The students' responses to the questionnaire were analyzed using descriptive and inferential statistics to evaluate the relationship among those variables. Then, the participants were classified into four groups based on their reading proficiency and personality types. The results indicate that each group of students used various reading strategies. Moreover, an interaction between reading proficiency and personality types on reading strategy use can be seen only in global and socio-affective strategies. The relationship among those variables was also accomplished using a multiple regression model. Based on the results, it can be claimed that students with different reading proficiency and personality types use different strategies for comprehending English online texts. The findings recommend that students need to be exposed to use support strategies, such as paraphrasing or taking notes. Therefore, they can promote their online reading performance by capturing and interpreting the information they obtain from texts.