This research primarily aims to study the use of Line application to communication among the staff members of the Graduate School of Suan Sunandha Rajabhat University and to examine their satisfaction upon the use of such application. This research was a quantitative research study. The research was carried out between September 2017 and July 2018. The research sample was 40 staff members of the Graduate School. Data were gathered by the use of a questionnaire and analyzed with descriptive statistics including percentage, mean, and standard deviation. The research findings showed that in terms of the main topics of communication, the topics related to the organization was discussed the most via Line application. According to the sample, their opinion upon use of Line application to discuss the information related to the organization was rated at a high level. Special topics of discussion included the development of study program, information on students’ registration, research and academic service activities. These discussions were to ensure that the team members would understand the details of these aspects correctly (X̄ = 3.81). In terms of general information, it was found that the sample rated the use of Line application to discuss general information at the highest level. The topics of discussion included searching for various kinds of knowledge such as food, tourism, and health (X̄ = 3.91). Moreover, the overall satisfaction upon the use of Line application (i.e. its response, the purpose of using, convenience, speed, accuracy, and communication) was at high level (X̄ = 3.86). Lastly, the study revealed that staff members with different gender, age, marital status, education level, work position, the faculty they work for differed in their satisfaction on the use of social media with a .01 and .05 level of statistical significance.
Keywords: Use of Line Application, Communication, Staff Members