Blackboard Open Learning Management System (LMS) is the online learning and teaching platform of Lyceum of the Philippines – Laguna. While school has initiated efforts to introduce blended learning among its students, faculty adoption has been a challenge. It is in this light that this research is aimed to investigate users acceptance and use of Blackboard Open LMS among academics. It is composed of 58 college teachers in different department as respondents. This study adopts the Unified Theory of Acceptance and use of Technology (UTAUT) Model which developed by Venkatesh et al. (2003) to assess the perception of teachers in this technology. Quantitative and correlation methods were used in this study to collect the data information needed. The data were analyzed using Structural Equation Modelling (SEM) method to examine the hypothesized research model. The findings of the study found that the best predictor to behavioural intention of teachers to use Blackboard Open LMS is based on the facilitating condition. Another variable that has to be considered that influence the intention of teachers in using Blackboard Open LMS is the social influence. Effort Expectancy has a minimal factor that influence the teachers to use Blackboard Open LMS and the performance expectancy suggests that it does not influence to the behavioural intention of teachers in using the Blackboard Open LMS.