Introduction: Accurate staging of carcinomas of the gallbladder is helpful in improving the prognosis. USG is initial modality of choice when investigating jaundice or non–specific complaints where in doubtful cases or if USG suggests a resectable biliary malignancy, computed tomography (CT) often provides additional information. Objectives: To evaluate the diagnostic accuracy of USG and computed tomography (CT) for staging of carcinoma gall bladder. Methodology: 26 patients were selected for the study for which they underwent USG and computed tomography (CT) examination after explaining the entire procedure and the risks involved. Results: In Our study, gall bladder cancer was most common in 30–50 year age patients (54%), with gall bladder cancers were 2–3 times more common in females compared to males. Patients presented as either mass replacing gall bladder fossa or wall thickening is in equal distribution with less common presentation as intraluminal mass with USG scored slightly better over CT in cases of mild wall thickenings of gall bladder however, CT was more sensitive in detection of infiltration of lesions in adjacent liver. Among early stages in gall bladder malignancies (stage I and II), USG and CT were not sensitive in accurately differentiating stage I from stage II lesions. USG has significantly lower sensitivity than Computed tomography (CT) in detecting enlarged lymph nodes while CT was highly sensitive in detecting metastatic lesions in different regions of body. Conlcusion: USG being less expensive and radiation free, is the first line investigation in patients of gall bladder cancers but CT remains the investigation of choice as it is superior diagnostic imaging modality than USG prior to treatment which improved detection and characterization of tumor contribute to better diagnostic accuracy and consequently reduction of invasive procedure which lead to significant reduction of mortality and morbidity from tumor.