胸廓（英语：thoracic cage）又称肋廓（rib cage）、肋骨笼，是多数脊椎动物胸部由胸椎、肋骨、胸骨构成的骨质支架。由胸廓围成的空腔称为胸腔。胸廓可以保护胸腔内的心、肺等重要器官。
人类的胸廓由12块胸椎、12对肋骨和肋软骨以及1块胸骨（包括胸骨柄、胸骨体和剑突三部分）构成。
参考文献
- Orientation of the intercostal muscle fibers in the human rib cage, Subit D., Glacet A., Hamzah M., Crandall J., Computer Methods in Biomechanics and Biomedical Engineering, 2015, 18, pp. 2064–2065
- Clinically Oriented Anatomy, 4th ed. Keith L. Moore and Robert F. Dalley. pp. 62–64
- Principles of Anatomy Physiology, Tortora GJ and Derrickson B. 11th ED. John Wiley and Sons, 2006. ISBN 0-471-68934-3
- De Humani Corporis Fabrica
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