Sun and Steel: Art, Action and Ritual Death (Japanese: 太陽と鉄, Hepburn: Taiyō to Tetsu) is a book by Yukio Mishima.

The book recounts the author's experiences with, and reflections upon, his bodybuilding and martial arts training.

The book was first published in 1968, gathering what had appeared in the Takeshi Maramatsu-founded magazine Hihyō from late 1965 on.

In 1972, the American fiction writer Hortense Calisher billed the book as "a classic of self-revelation" and Mishima as "a mind of the utmost subtlety, broadly educated".

Calisher wrote, "To paraphrase him in words not his, [...] is to try to build a china pagoda with a peck of nails.