长尾刺豚鼠属（学名：Myoprocta）是啮齿目刺豚鼠科中的一属，分布于南美洲，本属包含2种：

• 小长尾刺豚鼠（Myoprocta acouchy 或 Myoprocta exilis）
• 长尾刺豚鼠（Myoprocta pratti 或 Myoprocta acouchy）

The acouchis (genus Myoprocta) are rodents belonging to the family Dasyproctidae from Amazonia. They are generally smaller than the common agoutis and have very short tails (5 to 7 cm), while the common agoutis lack tails. For this reason the acouchis are also called tailed agoutis.