This research was funded by Institute of Research and Development, Rajamangala University of Technology Thanyaburi. The purposes of this exploratory research were 1) to identify students’ level of the acceptance toward the use of the library mobile application, 2) to examine factors influencing the students’ level of the acceptance toward the use of the library mobile application, 3) to investigate the students’ satisfaction toward the use of the library mobile application, and 4) to suggest some guidelines for future development of the library mobile application at Faculty of Liberal Arts, Rajamangala University of Technology Thanyaburi (RMUTT). The 400 students of Faculty of Liberal Arts, RMUTT, who used the library service, were selected by convenience sampling. The research instrument was a questionnaire (IOC = 0.977, α = 0.970). The data were analyzed by percentage, mean, standard deviation, t-test, f-test, Pearson’s correlation coefficient, and multiple regression. The research results showed that the students’ acceptance toward the use of the library mobile application was at high level ( =3.93): attitude ( =4.01), perceived usefulness ( =3.93), perceived ease of use ( =3.91), and intention to use ( =3.86). The overall satisfaction of the students toward using the library mobile application was at high level ( =3.86). According to hypothesis testing, the differences of frequency of use, objectives of use, getting advice, and learning how to use the library mobile application affecting the students’ acceptance of using library mobile application at the level of .05 statistically significant difference. The multiple regression analysis could predict the acceptance of using the library mobile application that perceived ease of use, perceived usefulness, attitude, and satisfaction affected intention to use. In order to increase the performance of the library mobile application, the students suggested that the library mobile application manual in Thai language should be provided, online user support should be available via the application, and full text should be able to be downloaded