Nagamine Osahiro

• Japanese: 永峯 晴水 養広 (Nagamine Seisui Osahiro)

Nagamine Osahiro, also known as Nagamine Seisui, was a Kanô school painter who studied under Kanô Osanobu (Seisen'in). Osahiro is known for his copying of the third scroll of the 13th century work Ippen Shônin eden.

He was born in Aizu. A handscroll by Osahiro depicting the 1832 Ryukyuan embassy to Edo in procession, later reformatted into an album (i.e. a bound volume, rather than a scroll), is in the collection of the University of Tokyo Historiographical Institute today.