布洛卡区（英文：Broca's area）也译为布罗卡区是大脑的一区，它主管语言消息的处理、话语的产生。与Wernicke area共同形成语言系统。布若卡氏区与韦尼克区通常位于脑部的优势半脑（通常位于左侧），这是由于大多数人（97%）是右利的缘故。 1861年法国神经学家兼外科医生保罗．布罗卡（Paul Broca,1824-1880）对一些失语症患者进行研究及治疗时发现此一区域，位于大脑皮层额下回后部的44、45区，故以其发现者的名字命名为布罗卡区。 运动性语言中枢在此区域内。布洛卡区与维尼克区由额叶和颞叶间的神经信道弓状束（Arcuate fasciculus）连接

Broca's area or the Broca area /broʊˈkɑː/ or /ˈbroʊkə/ is a region in the frontal lobe of the dominant hemisphere (usually the left) of the hominid brain with functions linked to speech production.

Language processing has been linked to Broca's area since Pierre Paul Broca reported impairments in two patients. They had lost the ability to speak after injury to the posterior inferior frontal gyrus of the brain. Since then, the approximate region he identified has become known as Broca's area, and the deficit in language production as Broca's aphasia, also called expressive aphasia. Broca's area is now typically defined in terms of the pars opercularis and pars triangularis of the inferior frontal gyrus, represented in Brodmann's cytoarchitectonic map as areas 44 and 45 of the dominant hemisphere. Studies of chronic aphasia have implicated an essential role of Broca's area in various speech and language functions. Further, fMRI studies have also identified activation patterns in Broca's area associated with various language tasks. However, slow destruction of the Broca's area by brain tumors can leave speech relatively intact suggesting its functions can shift to nearby areas in the brain.