In agriculture, the role of agricultural information cannot be over emphasized in enhancing the agricultural development. Information is crucial for increasing agricultural production and improving marketing & distribution strategies. Agricultural extension has a strong reliance on information exchange among farmers. This study examined Farmers perception on the effectiveness of extension events in the process of improved agricultural technology promotion the case of Sidama region and employing a simple random sample strategy as well as a purposeful sampling technique to choose the research region and 160 respondents’ farmers from study area were selected. The study showed the perception of farmers on the effectiveness of extension events in disseminating agricultural information to farmers. The majority of the farmers confirmed method of demonstrations (60.6%), training (46.1%), and farm visits (17.6) as very effective extension events to adopt new and improved agricultural technologies. However, (26.7%), (21.2%), (20.6%) (16.4%) of the farmers on the ADPLAC, FRG, use of extension materials and review meetings respectively rated as very ineffective extension events to utilize the technologies and also a positive and significant relationship between the effectiveness of extension delivery channels with a level of education, gender, membership on FRG, and trainings.