In this thesis, the researcher examines ethical dilemmas journalists in Amhara Mass Media Agency face regarding their personal Facebook usage. This thesis employed qualitative in-depth interview with twelve AMMA journalists, editors and media managers and quantitative content analysis of the posted messages of 129 journalists for data collection. The research has been farmed based on two theories such as, professionalism theory and social responsibility theory which have been assumed resolving ethical problems and providing broader perspective. The results show that the participants are frequent users of their personal Facebook account, they mostly access internet at the office and they mainly use for personal and work related purposes. Consequently, this research identifies journalists use their personal Facebook page for various purposes, such as to find news and information, to get feedback, to promote and distribute their work and personal opinions, to engage on a discussion with audiences, to follow sources and like. The study also reveals that messages displayed on journalists’ personal Facebook page are mostly personal opinions and focus on politics. The research displayed journalists still struggle with ethical dilemmas such as, being factual and opinionated and being personal or professional regarding their personal Facebook usage. The research recommends being ethical and professional concerning journalists’ personal Facebook usage by implementing the guideline. The media organization insures the appropriate use of the social media policy for their benefits by providing regular training for journalists; media organizations should update their system including the editorial policies accordingly.