Surname Overview
A Rare Han Chinese Surname
Nai, pronounced nài, is a relatively rare Han Chinese surname currently found in places including Jing County in Hebei, Taiyuan in Shanxi, Hancheng in Shaanxi, Laohekou in Hubei, Guanyang in Guangxi, and Chenghai in Guangdong.
Reference: 奈姓_奈姓的来源和历史_百家姓
Origins
Two Origin Traditions
Two explanations are given for the surname’s origin: a phonetic change from the surname Na followed by adoption of the written form Nai, and adoption of Nai from the first sound of the Mongol tribal name Naiman by some members during Sinicization.
Reference: 奈姓起源 - 姓氏根脉·家族渊源 - 姓氏大全
Historical Records
Recorded in Surname Texts
The surname Nai is included in Xing氏 Kaolüe, which cites Xingyuan.
Reference: 奈姓_奈姓的来源和历史_百家姓
Commanderies and Clan Halls
Commandery Association
Because the Nai population was small, it did not develop a major independent commandery association; later tradition generally assigns it to Taiyuan Commandery.
Reference: 奈姓起源 - 姓氏根脉·家族渊源 - 姓氏大全
Notable People
Nai Heng of the Ming Dynasty
Nai Heng passed the imperial examination during the Xuande era of the Ming dynasty and served as Vice Minister of Revenue.
Reference: 奈姓_奈姓的来源和历史_百家姓
Research Notes
The Naizhuang Surname-Change Tradition
A tradition in Naizhuang, Xihua, Henan, says that the ancestors adopted the surname Nai while fleeing persecution; the historical origin and authenticity of this account can no longer be established.
Reference: 奈姓出自哪里,我姓奈 有同姓吗?_百度知道