Gallbladder percutaneous tissue sampling is a not-so-common technique in cytohistological diagnosis of gallbladder tissue or masses, which can be useful in cases of surgically unresectable disease and unfeasible endoscopic assessment to address the most adequate chemotherapy course. Nonetheless, gallbladder percutaneous tissue sampling can be of great utility in the patient’s diagnostic and therapeutic work-up. This article summarizes the literature evidence on gallbladder biopsy techniques, complications, and technical precautions for a safe and effective sampling.