Mariano de Mur Cirera (9 October 1909 – 21 August 1936) was a Spanish footballer who played as a defender for Espanyol in the 1930s.^[1][2][3] His brother Ignacio also played football, but for CE Europa.^[1]

Born on 9 October 1909 in Sabadell, de Mur began his football career at his hometown club 'UE Sants in 1928, aged 19, where he was known as Ben-Hur.^[1] In 1929, he was signed by Espanyol, with whom he played for two seasons, scoring a total of 1 goal in 23 official matches, including 3 in the Catalan championship, 7 in the Copa del Rey, and 13 in La Liga.^[1][3] Despite his short stay there, he left his mark at the club by featuring in Espanyol's historic 4–0 and 8–1 victories over Barcelona and Real Madrid in early 1930s.^[4][5]

After leaving Espanyol, de Mur played one season at Vilafranca (1931–32),^[6] where he showed "excellent form", but despite receiving several offers, he decided to return to Sants,^[7] where he also played for one season, before retiring at Huesca in 1933, aged only 24.^[8]

Like so many other players from Espanyol, de Mur was eligible to play for the Catalan national team, making his debut on 8 June 1930, starting in a friendly match against the Basque Country national team at Montjuïc, which ended in a 1–0 loss, and then two weeks later, on 22 June, he played a tribute match to Rini in Zaragoza, which ended in a 3–1 loss.^[9] Two years later, on 16 May 1932, he earned his third and last cap for Catalonia in a tribute match to Carles Oliveras against his former club Sants, helping his side to a 2–0 win.^[10]

Outside football, he was a commercial expert. On 21 August 1936, just a month after the outbreak of the Spanish Civil War, De Mur was imprisoned, tried, and shot by the republican repression in Graus.^[1]