Acute acalculous cholecystitis (AAC) represents gallbladder inflammation without evidence of gallstones. This typically results from gallbladder stasis and/or ischemia, which then causes a local inflammatory response within the wall. The condition is typically multifactorial and seen in critically ill patients, with associated risk factors that include trauma, burns, infections, total parenteral nutrition, and surgery. We present the case of a patient with acute-on-chronic hepatitis C infection leading to AAC.