Nagaoka Shoten Co., Ltd. (株式会社永岡書店) is a Japanese book publisher founded in 1963 and based in Nerima-ku, Tokyo. The company mainly deals with practical books and children books, releasing some Mega Man (known as Rockman [a] in Japan) books between 1995-1996.

Tear-off calendars made from ultra-thin, translucent washi called Junpakushi, known for its purity and fine texture. Often used in art preservation, it adds elegance and lightness to each page.