Background: Informed consent is the backbone for recent medical practice and it is groundedrnin ethical and legal concept-that patients have the right to understand what is being done to theirrnbodies (personal autonomy) and agree to the potential consequences of the healthcarernintervention. Informed consent is considerably beyond putting a signature to the form; thernanesthesia professional and the patient develop the anesthesia plan through discussion ofrnalternatives and risks and benefits of the plan. rnObjective; The objective of this study was to explore the patient's knowledge, attitude andrnassociated factors on anesthesia informed consent among adult elective surgery at a selectedrnpublic hospital in Addis Ababa. rnMethods; Institutional based Cross-sectional study designed was used with including all electivernsurgery scheduled patients from December 23/2019 to March 23/2020 with consecutivernsampling technique and proportional allocation. A Structured questioner was used with trainedrndata collectors. Data were coded, entered into EPI data v.7 and data was exported to SPSSrnversion 21 statistical package for analysis. Binary logistic regression was used to deal with thernresponse variable. The crude and adjusted odds ratios with their corresponding 95% confidencernintervals were computed. rnWork plan and budget; The study was conducted from December 23/2019 to March 23/2020rnwith a total budget of 29, 240 ET rnResult; Patient knowledge about the anesthesia informed consent, 65.8% were knowledged andrn34.2% were not knowledgeable. Marital status, educational level, professionals who providernanesthesia informed consent and place were anesthesia informed consent taken werernsignificantly associated with patientâ€™s knowledge. Concerning the attitude of patients, aboutrn44.3% (181) had a positive attitude, and 55.7% (228) had a negative attitude. Sex, marital status,rneducational level, and place were anesthesia informed consent provided had significantlyrnaffected with patient attitude. rnConclusion; Patients who were under the study had limited knowledge and attitude and differentrnfactors were affected them.