Mariano Barbasán Lagueruela (3 February 1864 – 22 July 1924) was a Spanish painter of genre scenes and cityscapes in the Realist style; later influenced by Impressionism.

Upon graduating, he moved to Madrid and became a historical painter; specializing in scenes from the history of Toledo, which he visited frequently.

In 1889, thanks to his painting "Joseph Interpreting the Cup-bearer's Dream", he received a stipend from the "Diputación Provincial de Zaragoza [es]" to continue his studies at the Spanish Academy in Rome.

[1] He eventually decided to live there and opened a studio; making occasional trips to Subiaco and Anticoli Corrado to paint en plein aire.

He held frequent exhibits throughout Germany, Austria and England, but not in Spain, as a result of which he was little-known in his home country.