We have determined that the magnitude of Extended-spectrum beta-lactamase (ESBL) production and Antimicrobial Resistance (AMR) pattern among Enterobacteriaceae in the four hospitals laboratories of the capital city of Ethiopia. During the five months cross-sectional study there was a high magnitude of ESBL and MDR in different clinical specimens. Knowing the magnitude of antimicrobial resistance is important for the implementation of strong infection control strategies. Moreover, we tried to compare double-disk synergy test (DDST) against combination disk test (CDT) for the detection of ESBLs among Enterobacteriaceae. The study is the interest of readers in the areas of bacteriology and antimicrobial resistance.