Nagai Naotsune (永井 尚庸, 1631 – April 28, 1677) was a Japanese daimyo of the early Edo period. He served in a variety of positions in the Tokugawa shogunate, including wakadoshiyori and Kyoto Shoshidai.
Naotsune did not formally rule a domain; however, as he was given income from various lands within Kawachi Province rated at 20,000 koku, he was counted as a daimyo. His son Nagai Naohiro also became a high-ranking shogunate official.
- Bolitho, Harold. (1974). Treasures Among Men: The Fudai Daimyo in Tokugawa Japan. New Haven: Yale University Press. ISBN 978-0-300-01655-0; OCLC 185685588
|6th Kyoto Shoshidai
| Succeeded by|