José Llovera Mas (30 October 1896 – 3 June 1977) was a Spanish author and football referee active between 1922 and 1932,[1] and who officiated three international matches between 1926 and 1932.

[5] Born in Llinars del Vallès, Catalonia, on 30 October 1896,[1][2] Llovera began his refereeing career in the mid-1910s, still as a teenager, doing so initially as a hobby.

[1] During his career, he officiated several notable matches that went down in the history of Spanish football, such as the semifinals of the 1923–24 Prince of Asturias Cup between the regional teams of Centro (Madrid) and South (Andalusia), which ended in a 2–1 win to the former.

[6] In the following year, on 15 January 1925, he refereed a Derbi Barceloní in the Catalan championship, which was held behind closed doors after it had been suspended by Biscayan referee Pelayo Serrano due to serious crowd disturbances; Espanyol won 1–0, and Llovera "carried out an impeccable performance".

[9][10] In the following year, on 26 December 1926, the 30-year-old Llovera made his international debut, refereeing a friendly match between Portugal and Hungary in Porto, which ended in a 3–3 draw.