Marcelino de Unceta y López (22 October 1835 – 10 March 1905) was an artist, illustrator, and painter of Zaragoza and Madrid.

Another notable work was Unceta's design of the curtain of the Teatro Principal of Zaragoza circa 1877, which can be seen today in its original location.

It illustrates allegorical figures of the muses of drama, who are linked to drawings of famous Spanish authors and actors of the time.

Unceta was a skilled painter of military practices; he made many paintings of battle maneuvers in a careful and realistic style.

He was also influenced by the Romantic movement, such as in his painting "El suspiro del moro" ("The sigh of the Moor", a reference to King Boabdil of Granada).