Background: An emerging respiratory disease was abbreviated as COVID 19, after it has been first reported in December 2019 in Wuhan city of China. The virus is zoonotic which has a tendency to be transmitted between animal to human and human to human. The major route of transmission of COVID-19 is droplet and close contact. Ethiopian ministry of health has initiated training for health care workers at a different level. WHO and CDC also initiated a multidisciplinary approach to tackle COVID-19 of which awareness creation is the main. Thus, the main objective of this study is to assess knowledge, attitude, and practices of health workers in Ethiopia towards COVID-19 and its prevention techniques.Method: an institutional-based multicenter cross-sectional study was conducted in each of eight teaching and referral hospitals. A total of 422 Ethiopian healthcare workers were selected for the assessment of knowledge, attitude, and practice towards COVID-19. Socio-demographic characteristics and data related to the KAP of the participants were collected using a structured questionnaire Logistic regression model was used to identify factors associated with the attitude and knowledge of healthcare workers towards COVID-19 at a significance level of p<0.05.Result: Three hundred ninety-seven healthcare workers participated in the study with a response rate of 94%. Among these, 88.2% and 94.7% of respondents had good knowledge and positive attitude respectively. A respondent with history of chronic medical illness (OR: 0.193, 95% CI: 0.063-0.593), social media, telecommunication, and television/radio as a source of information were significantly associated with knowledge (OR: 3.4, 95% CI: 1.5-7.4, OR: 4.3, 95% CI: 1.3-14.3 and OR: 3.2, 95% CI: 1.4-7.2). Additionally respondent with history of chronic medical illness was significantly associated with negative attitude towards COVID-19.Conclusion: The overall level of knowledge and attitude was good. However, the practice was relatively low. Source of information like social media, telecommunication, and television/radio were positively associated with healthcare workers' knowledge about COVID-19. Strategies for enhancing the capacity of healthcare workers to develop practice are needed.Keyword: COVID-19, Knowledge, Attitude, Practice, Healthcare worker, Ethiopia