《广雅》是一部由三国张揖大约在227年前后编写的中国古代百科词典，共分19类，仿照《尔雅》体裁的训诂汇编，形同《尔雅》的续篇，主要不同的地方是取材范围比《尔雅》更广泛。

《广雅》的意思就是增广《尔雅》。此书曾于隋炀帝（杨广）年间为避其讳而被改称为《博雅》，意义与原名同。

The Guangya (Chinese:廣雅/广雅; pinyin:Guǎngyǎ; Wade–Giles:Kuang Ya; "Expanded [Er]ya") was an early 3rd-century CE Chinese dictionary, edited by Zhang Yi during the Three Kingdoms period. It was later called the Boya (博雅; Bóyǎ; Po-ya; "Broadened [Er]ya") owing to naming taboo on Yang Guang (楊廣), which was the birth name of Emperor Yang of Sui.